There was a guy I worked with that always ended up at the gym the same time as me. I tried to avoid him at ALL costs, but he would still get me and try and stand and talk while my muscles got cold.
Anyways, he was 6', MAYBE 180, and would always say, "Yeah, I saw those guys doing shrugs with incorrect form, and they saw me over there doing 500? 600 pound shrugs? (Then does stupid laugh.) Then he complains that his shoulders dwarf in comparison to his traps, then continues to do shrugs EVERY DAY! Not to mention, HIS form was shit, and all he actually did was load the machine up with every plate he could find, walk around the smith machine to see who was looking at all the weight, then get on it and do one MAYBE two half-assed shrugs.
He would do the SAME thing with leg presses, he'd bitch about their not being enough weight in the gym for him to do leg presses, but then he'd load it up, look around to see who was admiring him, then get down and do one or two calf raise looking leg presses then get right back up and walk around seeing who was looking at him.
Then whenever I asked why he didn't just do squats, OBVIOUSLY it was because he had a knee problem and couldn't. Or why he didn't do dead lifts, his back was bad. Or why he was only benching 200 pounds, his shoulder was bad. Basically, the dude was injured whenever he couldn't lift as much as much, but he could KILL it with bad form and half-reps on shrugs and leg presses.