Though bodybuilders may be able to bench hundreds of pounds, toss truck tires with ease, and fear no leg day workout unlike us mere mortals, there are a few things they can't do. Itch their backs. Appeal to women. And of course, safely touch sharp objects without risk of deflating like a sad bouncy house after a long birthday party. 

From stage competitions to gym reps, here are 20 bodybuilders who are about to pop.