S. needs a diaper change, goes and gets a diaper for Daddy and lies down on the floor. Daddy removes wet diaper and places dry one under her bottom.
S. pushes both feet on the floor and scootches off the diaper. Smiles at Daddy.
Daddy places diaper under bottom. S. scootches off. Chuckles.
Did you know this can go on pretty much infinitely as long as you make sure you don't run into anything? And that you can continue to get away with it for as long as everyone else in the room is trying not to laugh and failing miserably?