On a white shirt, in white capitals, the words I HAD POTENTIAL sit above a curved ramp that descends from upper left to lower right. At the top of the ramp, on a small ledge, is a dashed circle — an outline, empty. At the bottom, on a flat ledge, rests a solid white ball. The ramp is not a straight diagonal; it bows, the way a skate ramp or a playground slide bows. The dashed circle is where the ball would have been. The solid ball is where it is.
That is the whole design. No equations, no arrows, no labels. The joke depends on the reader supplying the missing verb: roll. The ball had potential energy at the top — gravitational potential, the kind that depends on height and mass and the acceleration of gravity. It still has potential energy at the bottom, just less of it. The dashed circle marks the position of maximum potential. The solid ball marks the position after the conversion. The shirt is a diagram of a loss that is also a completion: the ball did what potential does. It fell.
The double meaning is the point. In physics, potential is not a promise; it is a stored quantity, measured in joules, relative to some chosen zero. A ball at the top of a ramp has more of it than a ball at the bottom. In ordinary speech, potential is a promise — something you had, something you were supposed to become. The shirt collapses the two: the dashed circle is the person you were supposed to be, and the solid ball is the person who arrived. The ramp is the mechanism. The joke is not that the ball failed. The joke is that the ball followed the law.
What makes the drawing work as a drawing — rather than as a caption with decoration — is the choice of the dashed circle. A dashed line in technical drawing conventionally indicates something hidden, removed, or projected: a phantom line, a part that has been taken away, a position that is not currently occupied. Here the dashed circle is the ball’s earlier self, the version with more height and therefore more stored energy. The solid ball is the same object after the ramp has done its work. The shirt does not show a ball that failed to roll. It shows a ball that rolled, and a ghost of where it started. That is a more interesting joke than the slogan alone, because it requires you to read the diagram before you read the words.
The curved ramp matters too. A straight diagonal would read as a wedge, a simple inclined plane, the kind of thing you draw in a first physics lesson to calculate a component of gravity. The curve reads as a track — something a ball follows with changing speed, accelerating as the slope steepens, arriving at the bottom with a velocity that depends on the height lost. The curve makes the drawing feel like a diagram from a textbook or a skate park, not a corporate slide. It gives the ball somewhere to have been.
I am not going to claim the shirt is a teaching tool. It is a t-shirt with a joke on it, and the joke works because the physics is roughly right: a ball at the top of a ramp has more gravitational potential energy than the same ball at the bottom, and the difference goes into motion and then, eventually, into heat and sound. The shirt does not need to be more precise than that. But the precision of the drawing — the dashed circle, the solid ball, the curved track — is what separates it from a generic slogan. The words I HAD POTENTIAL could be printed on anything. The diagram is what makes the words mean something specific: not I wasted it, but it converted.
There is a version of this joke that is purely sarcastic — the eye-roll of the underachiever, the self-deprecating caption. The drawing pulls it the other way. A dashed circle at the top of a ramp is not an accusation. It is a record. The ball is still there, solid, at the bottom. The potential is not gone; it has been spent, which is what potential is for. If you want to read the shirt as a lament, you can. If you want to read it as a diagram of conservation of energy, you can do that too. The best diagram jokes let you choose.
The shirt is sold by Quirky Cotton Collective. This publication and Quirky Cotton Collective share an owner. You can find the listing here.
What I keep returning to is the empty circle. It is the only part of the drawing that is not solid, and it is the part that carries the joke. A solid ball at the top and a solid ball at the bottom would be a diagram of motion. A dashed circle at the top and a solid ball at the bottom is a diagram of time. The shirt is not about what you could have been. It is about the fact that the ball is no longer where the circle is. That is not a failure. That is a measurement.
Try This: Find a smooth ball and a ramp — a board propped on a book, a cookie sheet tilted against a counter. Mark the ball’s starting height with a piece of tape. Let it roll. Mark where it stops. The distance between the two marks is the potential that became motion. You do not need to calculate the joules to see the diagram. You just need to notice that the dashed circle is always behind the ball.