sick ass foo 

to tell someone that they are crazy (in a good way)

ROGER: "man i hooked up with like 4 girls at that party lasy night!! you should have been there!!"

PAUL: "fuckin roger!! your a sick ass foo!!!"

sick ass foo by paulbbj April 20, 2007

Sick Ass Fool 

More often than not, it is used in a derogatory manner. Can also be a term of endearment. Personally I mostly say it when someone tells me they did something I have no interest in.

Negative
"This is my first definition on Urban Dictionary!"
"Sick ass fool...."

Positive
"Dood I just got a keg!"
"SICK ASS FOOL!"

Sick Ass Fool by slompythepirate July 27, 2013

Sick Ass Fool 

Anybody named Nick who sells 1 gram cartridges of "wax" but it's really vape juice for 45 to dumb lil niggas and beat them up when they want their money back.

"Oh shit you know Nick"
"Hell yeah! He's a SICK ASS FOOL"

Sick Ass Fool by imasickassfoo August 30, 2018

sickass foo 

Someone with high socks and always down for everything and anything during any type of situation.

Guy: why does he have such high socks and always starting stuff?

Lalowkks: cuz he’s a sickass foo

sickass foo by @Lalowkks October 9, 2022