Half repping is a crime in itself. Half repping is where someone does a workout and only goes halfway. You see it a lot with squats and benchpresses (althought the worst by my experience is the leg press where people usually dont even hit 1/4 depth).  It's bad for the person doing it 1. you place unnecessary stress on your joints 2. your muscles don't go through full range of motion so you don't actually work them properly 3. using heavier weights than you can properly handle increases the chance of accidents significantly. It's also really annoying to have people running around saying they are matching your squat P.R. when aren't even close to correctly performing the excersize. It's an insult to lifting and all the hard work people are putting into it.  I can respect the shit out of someone squatting 135 if he/she has proper form and applies him/herself (no its not a lot of weight, although what is a lot should really be measured in % of body weight) but fuck halfreppers. But what did you expect from a fatty....