Granddaughter: Grandpa, I thought you were going to buy concert tickets for my birthday.

Grandpa: I asked if you'd mind if I bought the tickets and you said yes so I didn't buy the tickets.

Granddaughter: These days Grandpa, yes means yes.

Grandpa: I thought you would mind if I bought the tickets when you said yes.

Granddaughter: You're not going to go into that "Whose on first routine" again are you?