I don't interact much with children, but my pet peeve is people who bring their children to places with casual outdoor seating and then ignore their kids while they yell and play and run around and run into all the patrons and bump into your chair and come over and stare at you and only when one of them actually touches you or falls down and starts to cry do the parents say anything, and for some of the worst ones, it takes several bouts of empty threats to their kids before they actually will get up and do something. I really hate that. I prefer people's dogs coming over and putting their slobbery noses on my lap to these feral restaurant kids and their clueless parents.
Female, 5'3", 50, Max squat: 202.5lbs. Max deadlift: 225 x 3.