What's the pettiest thing that annoys you about other parents? Something that you know is so pathetic to care about but it really grinds your gears?
Mine is probably when people say they're doing 'a bit of traditional weaning and a bit of baby led weaning' - you can't half do BLW... traditional weaning is purees AND finger foods, BLW is your child ALWAYS feeding themselves regular food.
So petty, I wish I could let go of it, but I internally eye roll every time.