Me: Oh, you've got the giggles. Is it time to shake them out?
Me & Student: [shake] Teehee. Ha ha. Tee hee. [shake]
Student: Ok. I'm serious now.
Me: Hehee he.
Student. Ha ha. Tehee. Now you've given me the giggles! We have to do it again!
Me: Haha. Ok.