Girls and ladies, please help me out?

sorry this is random. i'm 14 and my 13 y.o. brother "pantsed" me today in front of my mom. he's so annoying and it's not the first time he's done it. in the past my mom's grounded him, but this time she said she'd take away his phone for one day OR she'd make him do one of my chores naked - to give him a taste of his own medicine. i'm leaning toward the chore thing, and if i do that one, then i get to decide what chore he does. it's gotta be indoors, so i was thinking clean behind all the couches, b/c he'd have to straddle the top part, and that means instant nut crunch. lol. what do u think of that idea? think that would be un-comfy for him? lol. help me out, girls!!!