Today I was discussing some training something-or-other with one of our trainers and I mentioned burpees. He asked me what that was and I tried (unsucessfully) to explain two or three times and then did one to demonstrate. My pants bound on my massively muscled thighs and the seam split across my bulging buttocks all the way from the waistband to the inseam under the crotch.
The moral of the story...
...Never demonstrate burpees while wearing slacks...