The Funniest T-Shirts to Wear on Casual Friday

Ah, Casual Friday—the glorious day when corporate dress codes relax, neckties disappear, and business casual outfits take a breather. It’s the one day a week when we can ditch the stiff collars and polished shoes for something more comfortable and, dare I say, fun. While everyone else is still trying to figure out how casual is too casual, you’re over here plotting your next funny t-shirt look like a mastermind.

That’s where we at Bonthings.com come in. We’re all about adding humor to the workplace (and life in general), and what better way to do it than through a carefully chosen, ridiculously funny t-shirt? Whether you’re looking to make your coworkers laugh, brighten the office vibe, or simply express your inner sarcastic genius, we’ve got the best picks to make your Casual Friday the highlight of the workweek.

But before you dive headfirst into wearing a t-shirt that says “I’m Not a Morning Person,” we should probably address one important thing: how funny is too funny for Casual Friday? (Hint: We like to think the funnier, the better, but maybe skip the ones that get HR involved.)

Let’s break down the top funny t-shirts you can wear to work on Casual Friday—and still (hopefully) keep your job!

1. “Running Late Is My Cardio”

We’ve all been there—dashing to the office with coffee in one hand, phone in the other, and a slightly guilty look on our face because that last snooze button was just too tempting. But who says you can’t be late and still stylish? This shirt is perfect for the habitual latecomer (aka all of us at some point). It’s a hilarious, yet relatable way to let your coworkers know that, yes, you’re aware you’re late, but hey, at least you’re getting your steps in.

Plus, wearing this on Casual Friday might just save you from the boss’s stink-eye when you stroll in 15 minutes after your 9 AM meeting. After all, if you can’t be on time, you might as well be funny about it!

2. “Pretending to Work Hard, or Hardly Pretending?”

Let’s face it, Casual Friday is often synonymous with mentally checking out by 3 PM. You’ve worked hard all week (or at least given the appearance of it), and now you’re just counting the minutes until happy hour. This t-shirt will make everyone laugh because, let’s be honest, we all know that Fridays are more about pretending to be productive than actually getting anything done.

Pair this shirt with a confident smile and maybe a stack of papers that look important, and you’ll breeze through the day without anyone questioning your dedication. (And if they do, just point at the shirt and laugh it off. It’s Casual Friday after all.)

3. “I’m Not Arguing, I’m Just Explaining Why I’m Right”

For the person in the office who’s known for having an opinion on everything (you know who you are), this shirt is the ultimate power move. It’s the perfect balance of sassy and clever, and it lets everyone know that while you might be the one doing most of the talking, it’s only because you’re clearly right.

Wear this t-shirt to your next Friday meeting, and you’ll instantly establish yourself as the confident (and hilarious) office philosopher. And who knows? Maybe it’ll save you from a few disagreements because, hey, why argue when you’ve already won?

4. “I Survived Another Meeting That Should Have Been an Email”

If there’s one thing we can all agree on, it’s that most meetings are completely unnecessary. We’ve all sat through that 45-minute conference call wondering why the entire thing couldn’t have been summed up in a two-sentence email. This t-shirt is your chance to tell the truth—loudly and proudly.

Rocking this on Casual Friday will definitely get some laughs, especially from your fellow meeting-weary coworkers. And the best part? It might just encourage your boss to think twice before scheduling yet another meeting. Or at least they’ll know not to call on you when you’re wearing this masterpiece.

5. “Professional Procrastinator”

Deadlines? What deadlines? This t-shirt speaks to all the procrastinators out there who somehow manage to get everything done at the last possible second. You may put things off, but when it’s crunch time, you always pull through. (And you do it with style.)

On Casual Friday, embrace your title as a “Professional Procrastinator” with this cheeky tee. Bonus points if you wear it right before you submit that report you’ve been putting off all week. It’s a shirt that says, “I know I procrastinate, but don’t worry—I’ve got it under control.” And, of course, it’ll make everyone laugh along the way.

6. “World’s Okayest Employee”

Look, not everyone can be employee of the month. And that’s okay! Sometimes, just being okay is enough. This t-shirt is the perfect way to express that you’re content with doing the bare minimum, but you still show up. Let’s face it, being “okay” in the workplace is a badge of honor, especially on Casual Friday when no one’s expecting 100%.

Wearing this shirt will get a laugh from your coworkers and probably a nod of agreement from the guy in the next cubicle. After all, not everyone can be a superstar, and that’s perfectly fine. Sometimes, showing up and doing the job is all that matters.

7. “Sarcasm: Just One of My Many Talents”

For the sarcastic soul who can’t resist throwing out a well-timed quip, this t-shirt is a must-have. It’s like carrying a neon sign that says, “I’ve got jokes, and I’m not afraid to use them.” Perfect for those moments when your quick wit needs no introduction—because the shirt already did it for you.

Pair this with your usual dry humor, and you’ll have the office chuckling by the water cooler in no time. It’s a bold statement that lets everyone know you’re the office comedian, but with a twist of wit that only a true master of sarcasm can pull off.

8. “Today’s Good Mood Is Sponsored by Coffee”

Nothing says Casual Friday like a giant cup of coffee and a shirt that pays homage to your favorite caffeinated beverage. Let’s be real: Fridays can be rough, especially if you stayed up late binge-watching Netflix the night before. But with the help of coffee, anything is possible.

This shirt is the ultimate tribute to the thing that gets most of us through the workday—coffee. Wear it proudly as you sip your morning brew and let everyone know where your good mood really comes from. And if your co-workers aren’t coffee drinkers, well, this is their gentle reminder that they’re missing out.

9. “Nap Enthusiast”

If you’re the type who fantasizes about napping under your desk during your lunch break, this t-shirt is your new best friend. It’s the perfect shirt for those Casual Fridays when you’d rather be napping than doing, well, anything else.

Whether you’re a power napper or an expert at long, lazy snoozes, this tee lets everyone know where your priorities lie. And honestly, who can argue with that? Napping is a skill, and you’ve mastered it. Bonus points if you manage to sneak in a nap during your lunch break without anyone noticing.

10. “Adulting Is Hard”

This shirt is for everyone who’s ever had to deal with the realities of adult life and thought, “This is way harder than I expected.” Bills, deadlines, responsibilities—sometimes it feels like being an adult is just one big, never-ending to-do list. And yet, here you are, adulting like a champ (most days, anyway).

Wearing this t-shirt on Casual Friday is the perfect way to bond with your coworkers over the shared struggle of adult life. It’s funny because it’s true, and let’s be honest, we could all use a little reminder that none of us really know what we’re doing. So why not wear the shirt that says it for you?

11. “Pajamas All Day”

Let’s face it, the dream of working from home in your pajamas is strong—and this t-shirt is the next best thing. It’s the perfect way to express your love for cozy, comfy clothing while still technically following the Casual Friday dress code.

Wear this to the office, and you’ll get knowing nods from everyone who’s ever wished they could stay in their PJs all day long. And who knows? Maybe your boss will be inspired to introduce Pajama Fridays as the next big office trend. A dream come true, right?

12. “I’m Silently Correcting Your Grammar”

For the office grammar nerd, this t-shirt is a subtle (or not-so-subtle) way to declare your love for proper punctuation and well-structured sentences. If you’re the one who always spots the misplaced apostrophes in emails or cringes at the misuse of “your” and “you’re,” this tee is calling your name.

It’s the perfect shirt to wear on Casual Friday, especially if you want to gently remind your co-workers to proofread their work. Just be prepared for a lot of people suddenly asking you to check their emails.