I might drop them every once in awhile, but of course there is always some dumb shit that yells and screams. We have one that is the typical 170 lb about 6'1". Every time he does arms he supersets barbell curls (40 lb) with pressdowns (maybe like 3 or 4 notches down, on a big stack). With every rep he grunts and at the end of each set he drops the 40 lb barbell walks over to pressdown and proceds his little grunt and scream at which time he lets the v-bar go which sends the plates crashing down and the v-bar hurling upwards hitting the damn machine 3 or 4 times. This continues for a minimum of 30 min, although i have been lucky to see a 60 min session once.