I've had a similar situation happen to me a while back.
My mom gave my brother and me some money to buy ourselves pizza before she went to work. We decided to throw in some of our own money to buy an extra pizza and soda to share with my dad. We came home with the pizza and soda and I told my dad what we got, and that there was pizza on the table if he wanted any. He said no, it was okay. So my brother and I ate some slices from one box and left the other box alone for my dad and for my mom once she came home.
My dad later decides to act like an ass, and when my mom comes home, he tells her how we're selfish and stuff because we "didn't bring him a slice of pizza." Even though we told him the pizza was on the table. Even though we asked him if he wanted any. Even though he told us (in what was apparently an act of passive aggression) that it was okay and that he didn't want any. :\