Hahnjob
Jamming your fist up a woman's butt and giving it a workout until she squirts like a fountain.
My dad did a Hahnjob on my grandma and she told him to stop or she’d call the police.
My neighbor does a Hahnjob on his wife every night and it's like a nightly ritual.
I did a Hahnjob on my crush and now we're dating, but I’m still sore.