Stupid crap kids find cool.
Repeated poop jokes.
Hide and seek.
Hanging scribble on a refrigerator and calling it “art”.
Crayons.
Collecting smoothed rocks.
Hanging upside down.
Poking people in the ass with chopsticks.
Watching the same episode of the same show every day of the week.
Relay races.
Screaming in a high pitch.
Adults.