Harry Potter Universe Puns

So me and my family were on our way to Florida for a trip to Universal and Harry Potter world. The five of us were crammed in one of the shuttles that you ride to get to the airport from the far hinterland where you park your car. My little brother, ever the curious one, is asking my mom about our upcoming flight. He asks "So where are we sitting on the flight?" My dad, who up until this point hadn't contributed much to the conversation, got the gleam of a dad in his eye. He gave a smirk and, before my mother could reply, said "Well I don't know about you, but I'll be sitting on my ass."