The guy who has his music so loud that everyone in a 100 yard radius has it inflicted on them and has to keep the cantankerous thing “idling” while he takes his stupid “German soldier” helmet off….
The only exception is if it’s Bob Seger…..(then it’s ok….)

Guys who put their helmets or waxy ear plugs on cafe’ tables.
Those who lean over another person’s bike while holding a drink.
Sitting on your bike while refuelling…Why ?
Passenger getting on first or getting off second.
Parking on soft ground on the right of another bike, so the sidestand will eventually sink and drop the bike on the adjacent one.