Flusack 

The scrotum and testicles at full distention as a result of a fevered body temperature.

Samantha, I had a temperature of 103 the other day and my flusack was slapping back and forth between my thighs.

Flusack by Seeehv November 6, 2022

flosack 

When someone quickly sucks PPs for money.

Brian: Hey everyone! I'm giving flosacks for only 99 cents!
Dylan: That's like, totally gay dude.

flosack by okkmissgirll January 29, 2021

Flysack 

The general term for a fly's nut sack.

Did you see the size of that Flysack on that horse fly?!

Flysack by Snack O' Matic August 27, 2009

flucackling 

when you laugh like you're the main villain

I was flucackling after taking candy from a baby

flucackling by hardywc March 20, 2022

flucackling 

when you laugh after doing something that makes you look like the main antagonist

I was flucackling after taking candy from the baby.

flucackling by hardywc March 20, 2022