Boy:Because you didn't tell me I would be performing in a hall
Alt) Make a joke about them, and then they'll get real offended.
You can't! You don't know which witch is which!
A finite number! One member to perform the task, and the rest to behave in a manner stereotypical to the ethnicity in question.
Because open balls are in his neighborhood
Uke hunt!
They're not allowed to run in the halls.