Jacob is a what I understand to be a typical little boy...
... and by that, I mean that he takes comfort in sucking his thumb with one hand and playing with his little boy parts with the other. Normally, he has pants on and we simply say "get your hand out of your pants", which he does, at least for a while.
However, lately, we've been working on potty training, so Alicia's been having him sitting in his big boy underpants watching his DVD's and taking breaks to sit on the potty. Both during diaper changes and without pants, the temptation is evidently much greater. So Alicia has been clarifying the rule to be "you can only do that if you're alone in your room."
So, today, after being reminded of this rule in the middle of his favorite DVD, Jacob promptly got up and walked off to his room. Presumably to continue what he was doing.
Alicia and I couldn't stop laughing.