Headcanon that shiro is that kind of dirty rotten thief that steals huge bites out of Keith’s ice cream/food stuff wile he’s distracted. He gets a kick out of Keith’s confused and offended look. Seriously shiro you have your own food gtf away from mine!
Alternatively Keith is the type to look longingly at shiro’s or someone else’s food until shiro caves and give some of his/buys him said food. No one can resist his kicked puppy look. … ok SHIRO can’t resist his kicked puppy look.