In childhood, a “wet willy” is when a bully licks his finger wet and wiggles it around in his victim’s ear.

In adulthood, a “wet willy” is when a man sticks his hard dick into a wet orifice.

In between, a “wet willy” is when a guy named William (upper left) takes a shower. Also shown are Jason, Carson, Duong, and Trevor. High school showers were scary… but so worth it.