Walter's punishment for putting his mom in her bikini is he has to touch her legs.
Walter: I'm Walter and I will put my mom in her bikini.
Walter's mom: Walter, what are you doing?
Walter: I'm going to put you in your bikini.
Walter: Yes! I put my mom in her bikini! Yes! I put my mom in her bikini!
Walter's mom: Oh oh oh oh oh oh oh oh oh oh oh! Walter, how dare you put me in my bikini! That's it! You are grounded for 10 days!
Walter's mom: Now you will start touching my legs and you will not stop untill you are ungrounded!
Walter's mom: Waaaaaaaaaaaaaaaaaaaaaa! Shut up Walter!