This has happened to me a lot lately and I almost wanted to choke the **** out of someone last night for doing it. This is just an example but it happens to me a lot. Last night I was mid set on some very slow and formful curls with 120lb barbell when some guy comes up to me and can see my veins popping out in my forehead and spit coming out my mouth and the guttoral groan emenating from the bottom of my stomach. He asks me "Hey are you using this? And points to a 35 lb barbell lying on the floor next to me" I just look back mid curl at him and growl and he decides better and leaves. This happens to me all the time and its almost always when i'm straining hard on a set. One time I just dropped my weights to the ground and told a guy if I lifted what he is asking me about i'd kill myself.