Funny Banana Gym Shirt You Have A Disease Small Biceps

A banana with a barbell and zero patience for excuses, that’s the whole joke on this one, and it lands with anyone who’s ever caught grief from a training partner for skipping arm day. The Funny Banana Gym Shirt plants the line “you have a disease, it’s called small biceps” right under a cartoon banana mid-lift, boots planted, bar loaded, completely unbothered by how ridiculous it looks to be this serious about biceps when you’re a piece of fruit.

Small Biceps Banana Design

We built this one around the idea that gym humor works best when it doesn’t try too hard, so instead of another generic “beast mode” print, the banana just says the quiet part out loud. It’s the shirt a lifting buddy hands you as a joke after leg day, or the one you wear to the gym knowing exactly who’s going to laugh first. Pair it with the kind of person who sends memes mid-workout and you’ve basically found its natural habitat.

You Have A Disease, It’s Called Small Biceps

That line does most of the talking here, and it works because it sounds like something your training partner would actually say between sets, not a slogan dreamed up for a shirt. We think that’s what makes it stick. Wear it to the gym, wear it grabbing food after a workout with the group chat that never lets anyone live anything down, or just wear it because you like clothes that make people ask what it means before they even see the banana.

Banana Barbell Graphic

The banana itself is doing more work than you’d expect from a piece of fruit, mid rep, weighted bar in hand, little sneakers planted like it’s been training longer than most of us. That’s the detail that gets a second look, not the punchline text but the fact that someone drew a banana with actual gym form. As a graphic tee, this one leans into the specific brand of humor that gym culture runs on, the kind where you roast your friends and yourself in the same breath. That’s the lane TeeMam plays in, taking everyday inside jokes and putting them on something you’d actually reach for, whether that’s for a workout or just running errands afterward still riding the high of a good lift. It’s not trying to be a motivational poster. It’s the opposite, honestly, and that’s exactly the point.

If you’ve got a gift list building for a birthday, a gym anniversary, or just want to needle a friend who takes their arm day a little too seriously, this funny gym shirt gets the message across without saying a word past the print. Grab it before the next leg day rolls around and someone else beats you to the joke.