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 get to choose. what do u think? and if you go with naked chores, what would u have him do? i was thinking clean behind the couches, b/c to do that he'll have to straddle them, and that means instant nut crunch. lol. so wut do u think of that idea? help me out, girls!!!