Two little boys are sitting in the living room watching TV with their parents.
The mother looks over at the father with a wink and a nod towards upstairs.
The mother turns back to the two boy and says, "We're going upstairs for a minute. You two stay here and watch TV. We'll be right back, ok?" The two boys nod OK, and the parents take off upstairs.
The oldest of the two boys is old enough to know that's going on now and he gets up and tiptoes upstairs. At the top ot the stairs, he peeks into his mom and dad's bedroom and shakes his head.
Back downstairs he says to his little brother, "Come with me." So the two little boys tiptoe up the stairs. Halfway up, the older brother turns to his younger brother ans says. "Now I want you to keep in mind, this is the same woman who used to scold us for sucking out thumbs!"