Not sure it's a pet hate as it's pretty much a one off, but whatever...
My gym is normally great but lately these three meat head mates have been spending a lot of time here. You know the type, inverse pyramids with singlet straps about as thick as their legs. Usually I just ignore them, they're judgemental f**ks but I'm not that worried, I gym for fitness and strength, I'm as serious a cricketer as I can be at my level after plenty of injuries so size has no attraction to me.
Anyway thanks to cricket and age I've recently suffered a SLAP tear in my shoulder and have been doing rehab exercises, usually at the very start of my session before I get into the stuff I can still do around the injury. Rehab is a series of very controlled exercises at very low weight to strengthen the muscles within the joint and realign everything.
Meathead one notices, points it our to Meathead two and very obviously goes "haha, 3kg? What's the point mate!"
Mate my shoulder might be f**ked but I can hock a cricket ball 100m, I can probably put that 3kg through your smirking face at 10m...