A slightly more PC way to say that someone is incredibly stupid, lacking in intelligence and also intolerably annoying (Credit goes to Dan Savage of The Stranger Seattle's Only Newspaper).
sales rep 1: "Gawd this customer is so dumb, she doesn't know the difference between USB and parallel"
sales rep 2: "How leotarded"
Ben is such a fucking leotard, he got arrested for trying to break into his neighbors house when he was drunk because he thought he lived there.
Coming back from a dance class or other function and you really have to go to the bathroom but realize that you have not only tights and a leotard on...but your regular clothes that you have put on over it after dance.
Tim: why is Sally complaining bout going to the bathroom..there is one over there.
Sue: Its because she has leotard syndrome..she doesnt want to take all her clothes off.