Eren: Heichou?

Levi: Yes, Eren?

Eren: Do you know what a lapdance is?

Levi: *spits tea* *coughs a bit and cleans face with a napkin*  Yes..why? Did Mikasa get something into your brain?

Eren: I wanna know what it is.

Levi: Sit down on the bed in my room and play music, I'll be there in a minute.

I'll leave the rest to your imagination~