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!"

fonzies by reinix October 30, 2007

Fonzies 

Aids. HIV.

I don't feel too good today guys. I think I might have the fonzies... "eeeeeyyyyyds" (ala the fonz, with appropriate thumb gestures).

Fonzies by DcTurner October 26, 2003

Double Fonzies 

Twice as good as regular good.
2 thumbs up!

"Dude, those spicy chicken wings were total double fonzies"

Double Fonzies by Bendy - SAB September 16, 2016

throwing fonzies 

Greeting: A sign of ones own coolness by sticking both thumbs up while wrist reman parallel to each other with elbos placed at the waist. Jiggle hands for enhanced emphasis upon coolness.

I threw fonzies in the wrong office and everyone thought I was there to fix the broken record player.
Even though you're throwing fonzies you still cant jump a shark in a leather jacket.

throwing fonzies by neight ford August 16, 2007

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

fonzied 

The act of hitting a mechenical device that is unserviceable with the side of your fist, rendering it now fully serviceable.

Just when it seemed like it was never going to work, I fonzied it and it came back to life.

fonzied by drooby June 3, 2010

Back Door Fonzie 

The fine art of slipping a thumb in the anus.

Yo Jerry, I was screwing this skank from Chalmette and I gave her the Back Door Fonzie. She didn't even flinch!!

Back Door Fonzie by RENO666 September 5, 2009