Driving is pretty annoying and most people are terrible at it. Calling somebody a super mean name (ideally not loud enough that they’ll hear you) when they don’t use their blinker can be just cathartic enough to bring the stress levels down and get you through your commute
… instead of just some nonsense scrap of paper you might have immediately at hand like a receipt, sticky note, torn envelope, junk mailer, kids‘ low-tier Pokémon card or…
