here's a good one from a few years ago.
there was this one annoying guy in the gym who'd all always be making very audible cocky wise guy cracks at some of the monsters. no one really paid much attention by and large probably coz he was one skinny mother fucker. so once he asks me to spot him on the bench and i agreed. so he unracks what would have been close to his max and struggles thro 3 reps on his own. so he mumbles to me to help him get it back in the rack coz he can't take any more and i psyche him up with " come on u can do another one". so he lets the bar down the 4th time and at that point i stand back and watch the fun. the bar wasn't moving at all and he starts to get frantic. then he struggles some more, sees it isn't going anywhere rests it on his chest to try another heave. so on his second attempt it still isn't budging and he starts to scream for help. for a good 30 seconds some of the other guys just put down whatever they were doing and snickered. finally the owner comes running and helps the bar off his chest and then yells at him for lifting a weight he couldn't handle!