Me: Watch it, buster.
Me: Step away from the bellybutton.
SH: You mean I don't get to touch your bellybutton for my birthday?
Me: You want that to be your birthday present?
SH: May I?
Me: If you stick your finger in my bellybutton, then I don't have to go out with you tonight.
SH: [Finger hovers over my bellybutton] Let me think about it.