Watching a guy in the gym today hanging upside down from the Smith Machine and twisting around while making hardcore noises so everyone else would pay attention to him. When he went to swing himself down to the ground after finishing, he hit the side of his thigh on the adjustable bar in the middle with a fairly audible whack. While one or two people went over to him and asked him if he was alright (he was), I couldn't help a moment of amusement over his dumbassaryness (yeah, I made that word up) though my mirth was fortunately not visible since I was the only one there besides the wife who was wearing a mask.
This has been the second "batman" I've witnessed hanging like this on one of the Smith Machines in the past few months (no harm came to the first guy), though the employees don't seem to care despite them being aware of it.