Top definition
When a man is giving anal sex, once he is inside the anus, he leaves his penis motionless, not moving in or out. His partner then proceeds to finger his butthole until ejaculation.

He may also perform this act on himself.
"That chick from the bar was wild dude! She gave me a Michigan Mountain Dweller! It was awesome!"
Get the mug
Get a Michigan Mountain Dweller mug for your Uncle G√ľnter.