Sleepover Brush
Using your finger in place of a toothbrush when sleeping over a friend's house.
Bobby: Are you going to walk out of my house without brushing your teeth?!
Carl: You said you didn't have any toothbrushes here.
Bobby: Then use your Sleepover Brush! Its better than nothing.
Carl: You said you didn't have any toothbrushes here.
Bobby: Then use your Sleepover Brush! Its better than nothing.