"Pissed off"

We got an Xbox today. Sammy got Toy Story 3 game for Rory. She is pretty good at working the controller so far. I went to the room to get ready for bed and Sammy was playing the game. When I came back out, Rory says, "Dad is getting pissed off at this game." We didn't say anything. Didn't want to make a big deal out of it and embarassed her. She gets mad. Then she started playing and then says, "Ugh, this game is pissing me off." Ok, time to tell her...not a good word Rory. Daddy's mistake! =)