A Fonzi

Sexual act in which the male participant inserts one thumb in the female participant's vagina and the other in her rectum, while saying "Heeeyyeee!" like the character from the popular television show "Happy Days".

Dude, last night I gave Stephanie a Fonzi and she went nuts!

by Bobby Joe Wilson April 20, 2008

Fonzie

the EXACT definition of ~COOL~!

Example one: You are SO Fonzie!!!
Example two: That movie was SO not Fonzie!

by Frodo September 16, 2005

be fonzy

to keep ones cool.

by fod April 23, 2003

fonzies

Nipples.
Usually used when referring to nipples on man boobs, but can be used when referring to female ones too.

"Are you cold? 'cause I can see your fonzies!"

by reinix October 30, 2007

Fonzied

when your so fucked up all you can do is give a thumbs up and say "AYEE"

"hey steven what are you doin"

he looks up and gives a thumbs up and replies "AYEE" before falling over

"o he is Fonzied"

by Dybl 2 da E December 13, 2010

a Fonzie

The act of smearing poo on someone to give them sideburns. Usually done in their sleep. Much like a "Dirty sanchez" or "Hitler".

Chris got a fonzie last night, and it smeared all over his pillow.

by Noah April 7, 2004

The Fonzie

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

Toyna loves the Fonzie.

by jw1973 April 20, 2008