Inapprope ...

Oma, to Spanish exchange student: Do they have those in Korea?
Spanish exchange student: ...

***
In History of the Family Class at a Christian University:
prof: Around that time the main reason for getting married was for sex.
me: That's as good a reason as any, to me

***
At McDonald's:
McDonald's girl: What can I get for you today?
Andrew: What do you recommend?