Keegan was playing with Kai's DS.

Kai: Mommy, will you time Keegan up?
Me: Time him up?
Kai: Yes, will you time Keegan  up?
Me: What is that?
Kai: Mommy, say, 'time'
Me: time
Kai: 'him'
Me: him
Kai: 'up', time him up. When I play KJ's DS she always time me up so her can play.
Me: Okay, I'll time Keegan up.

Yeah, so I'm still not sure what he means.