Fortass 

A term used for how big an ass is

“Hey you see how big of an ass my girls got”
“Yeah she got that fortass!”

Fortass by YxngJhit January 29, 2021

Fortass 

A term used for how big an ass is

“Hey you see how big of an ass my girls got”
“Yeah she got that fortass!”

Fortass by YxngJhit January 29, 2021

Fartass 

The fat face stinky fucktard that rejects your urban dictionary entry because he envies your awesomeness.

oh man, that fartass rejected my shit again!

Fartass by spiderguy February 16, 2015

fortissississimo

Really fucking loud

"The orchestra sang fortissississimo..."

"Your fucking ears must've bled!"

fortissississimo by Some really loud guy September 2, 2016

Fortissamo 

The act of running full sprint naked. Next tuck your nut-sack into your ass-crack and jump up doing a toe touch. Then proceed to land on your ass onto a plunger.

"Nick, I saw Olar giving himself the Fortissamo in the bathroom after class!"

Fortissamo by Brandaminator October 9, 2006

fortissimo 

A dynamic level in music. Basically, very loud.

The drummer was playing almost as loud as a Fortissimo level.

fortissimo by RealSGII2 December 11, 2018

fartass 

Just a random insult. Combining "Fart" and "Ass." Or accusing one of passing too much anal gas. Not an insult to be taken to heart, however. Fun times.

"Hey, John, how about you stop farting, you fartass."

fartass by Troy McGrath July 31, 2003