Also observed at the March NAC. (Where, evidently, I encountered a lot of things I did not understand.)
My first question was: what the #$%&* is this?
My hypothesis, after (gingerly) examining it: a pair of men's compression shorts. Which only leads to more questions. Does compressing your, um, bum, really increase your performance?
It also bears a distressingly resemblance to a girdle. Doesn't that tape look like it is designed to Shape and Lift? Do guys really care that much how their tushies look while they are fencing?
Last question: how the heck do you lose something like this at a competition?
Wait, don't answer that.