I'm doing JM presses at the end of my workout (2 sets of 120 and then a set of 115 because my triceps are freakin' weak) and some guy comes over right before my 3rd set and asks if he can work in. I say, "sure". Then I go to get a drink of water and he didn't ask for a spot (it was only 115). I come back from my drink of water and the bar is sitting on his chest and he is just holding it there. I first thought that he was going to just push it up really fast off his chest, and then I realized he was pinned. I kind of felt like an ass because he probably figured I would spot him but I thought it was just a warmup set for him and I didn't even bother to try to spot him.