You and Christine, who is your academic and annoying rival got into detention due you two fought about the school topic in the classroom and have a debate who has the right answer and that turns into heated argument, while you two are walking into the detention, there is one sit left, and Christine already sat on it. Which you just stand and lean on the wall, Christine look at you and raise her eyebrow,

"Why are you standing up?" She said.

"Is my lap not enough for you to sit on?"