She's been stewing on what happened since he ran out of the medbay.

Sometimes reading someone's motivations is hard for her. Sometimes, just when she thinks she has a person figured out, they switch everything up on her. And sometimes...she just needs to ask.

Pidge has been through enough green goo mishaps at the castle to avoid the worst of the food fight, taking only a few olives and half an oatmeal-raisin cookie to the back. The noise and the chaos combined with Dipper's apparent obliviousness makes it easy enough to sneak behind him and squeeze a pudding cup out over his head.