The Fonzie 

When you shove your thumb up a girls ass and yell "Aaaaayyy!"

Toyna loves the Fonzie.

The Fonzie by jw1973 April 20, 2008

The Fonzie 

While enjoying a cigarette after a night of intense sex, look your partner in the eyes, point at them with both fingers, and moan out "AYYYYYYYYYEE" in your best Fonzie impression, cigarette between your teeth

Friend 1 : "Yea so we fucked all night and then she pulled The Fonzie on me"
Friend 2 : Marry her, my dude"

The Fonzie by Chapö February 27, 2018

The Fonzie Method 

The act of forceably banging on or hitting an inanimate object one time in order to produce working conditions after several failled attempts.

Cornilius tried to start his car several times to no avail and with rage applied "The Fonzie Method" and the car jumped to life.

The Fonzie Method by nipples and dimes January 6, 2012

The Fonze

Its when a girl is on her knees sucking a guy off who is standing up and right when he's about to explode, he pulls out, shoots it in his hands and rubs it together. Then he slicks both sides of the girls hair back and says, "HEY"!

Did you see that girls hair, she must have gotten the fonze last night.

The Fonze by Kris Wick February 22, 2007

The Fonze

When you are doing a chick from behind, you shove your thumb in her ass and yell, "Heeeeeeeeeeeeeeeeeyyyyyyyyyyyyyyyyyyyyyyy"

While doing my chick i asked her if she likes Happy Days, when she questions it, you give her the Fonze

The Fonze by ElMartiniMan December 13, 2009

the Fonze

The act of shoving both your thumbs into a females anus and saying, "AAAAAA!"

Bill: Remeber that dishrag whore form the bar last night?
Tom: Yeah.
Bill: I gave her the Fonze.

the Fonze by mrducks December 19, 2003

The Fonzi 

After you bust a nut in a girls mouth you cock slap her in the face, put two thumbs out and say "heeey" like the Fonz in happy days.

Nancy was blowing Thad in the back of his 1975 thunderbird and he proceeded to give her the Fonzi.

The Fonzi by Big C-Ron August 19, 2007