Ok guys and gals, im at the gym today, its back day, i just got done doing abs and i head on over to the pullup bar...there is a guy in his late 40's, kinda built but chubby, you know the kind of guy that walks aroungd the gym for 4 hours like he has a rash under his arms....
Anyways, i ask if i can work in with him, doing wide-grip pullups...he agrees, i do my set: i do them proper: ie coming all the way up, and all the way back down for a nice stretch, with out swinging my body or using momentum, which is the way i belive in doing them, right guys?

Anyways, i get off the bar after my set, and this douche says to me, "you are doing them wrong", he says "the shorter down and up you go the more tension you keep on your muscles, and they will grow bigger". He says "let me show you", and does reps consisting of him pulling up self up literally 2 inches

i guess ive been doing them all wrong

but to top it off he is kinda pudgey, looks like he was decent in the 80's maybe, and my back is twice the size of his....
Also, ive had fat guys tell me im doing too much cardio while i have been cutting, ..."15 minutes is all i should do to spare muscle"

There has to be more stories, ladies and gentlemen please share the stories of the jealous douches that think they know everything at your gym...