Can a 13 year old wear diapers just to pee and poop?

yes. but you would have to go to a doctor to get a 13 year old's size. if you are having bathroom problems during the night, you may have enuresis. it's a common virus where you mainly wet the bed evrey day. doctor's do have diapers and alarms and stuff for 13 year olds but a 13 year old should not wear a diaper for fun.