Giving a girl "The Fonz" refers to the act of ejaculating onto her face, then gesturing with two thumbs up and proclaiming the happy-days catch phrase: "Ayeeee"

Sexual act in which the male inserts his thumbs into a woman's asshole and says "aeeeee" as if he were The Fonz.

To give the thumbs up!

An adjective used to describe something of the highest quality

a lesbian who takes on the characteristics of a male and would be ugly even if she was trying to be a female.

the fonz. When you shove your thumb up someones ass.

When a person inserts both thumbs into the anus of another person... and says "Ayyy".