I tend to play on the "under 18's" kids type days with my boys and the ultimate cringe is the guy we refer to as "full auto dad" (or FAD for short).
His boy is great, good player, get stuck right in, but dad has to keep yelling at him to do this, and do that, raar raar etc, the kids having a blast and completely ignoring his dad.
Heard him telling the kid at lunch to move like this and shoot like this.
Dad however runs around like a speed laced chicken, blasting everyone with full auto (hence the name).
Once he cornered my boy and from about 2 meters, lit him up, full auto and really upset him.
We had a quick word and that was it, FAD was on a hate offensive for me..... I mean, grow up, we're just LARPing with plastic guns ffs.