fonziest 

most like Arthur Fonzarelli aka The Fonz or Fonzie from the television program 'Happy Days'; the most cool and laid back

"Hey, are you sure Jack is cool?"
"Are you kidding? He's the fonziest!"

fonziest by Sarahfoglou August 8, 2008

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

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