My high kicks are not done in a line!
The above sentence appeared as a legend in a T-shirt I saw once. It accompanied the caricature of a soccer player warming up, but I didn't get the pun intended. When I told a friend of mine about this, he said that the joke might have to do with a certain expression from ballet … I hope that you can shed some light on this enquiry of mine.
Best Answer
As others have mentioned in the comments, "high kicks" can refer to moves performed by a dance team; for example, these dancers are doing high kicks in a line:
However, the wearer of the T-shirt does her "high kicks" like this:
I think the shirt is just meant to playfully say, "I'm an athlete, not a dancer!" by making veiled references to the football (soccer) field and dance floor.
I'd also guess the T-shirt was meant to be worn by a girl, since boys don't typically high kick in a line, or proudly proclaim that they feel more at home on the athletic field, as opposed to the dance floor.