When you're getting a blow job, right before you cum you stick both index fingers in your mouth and give her two wet willies in the ears making her back off because shes suprised and then you cum in her face
It's when a female is performing oral sex on a male, or male on male..., and just as the male is about to ejaculate he sticks his penis in the performers ear -wet willy- and ejaculates all in their ear.
This chick was giving me a blowjob one night, and i gave her a washington wet willy! She loved it.