SFISJ 

So funny I'm star jumping.

As random as rolling on the floor when something's funny, who would do that?

Man that's so funny I rolled on the floor!
I started doing star jumps! SFISJ!!!!

SFISJ by zzhurrizz May 29, 2010

sfiso

Kindest man you can get. Sfiso is loyal and even when everyone is sad, he brings optimism to the room.

You are totally a Sfiso! Best person ever!!!!

sfiso by Grayashmonstr January 21, 2018

sisjob

See bro jobs but with two girls.

Lisa: My panties are moist
Veronica: How 'bout some help down there. Wanna sisjob?
Lisa: I'm not a lesbo
Veronica: Just for fun?
Lisa: Okay

sisjob by browonder August 6, 2009

SFIS 

A versatile acronym used in chat conversations. Commonly defined as "So Funny it's Scary!" or "So Funny I Screamed!"

Users frequently replace the final "S" with other letters such as "L" (So Funny I Laughed!) or "U" (So funny I urinated!)

As internet chatsters across the globe realize the amazing versatility of this acronym, it's only a matter of time before "LOL" becomes obsolete.

Friend #1 - "That hair on your cheek is out of control!"

Hairy Cheeked Friend #2 - "SFIS!"

Friend #1 - "No really, you need to pluck it at once!"

Hairy Cheeked Friend #2 - "SFIU!"

SFIS by SlaveToTheBean November 7, 2008

sfism

So Funny I Shit Myself

That was SFISM! Awesome joke!

sfism by Khrag June 10, 2011

Sfiso

The type of guy that likes it harder. Becareful around Sfiso's, they'll bust a handle. They have a tendency to like Lypse's tits and they enjoy SUSHAY! The quality stuff. They tend to have panda fixations and have strange fetishes for wolf furries. But I guess, if you like it, you like it.

1. Aw man, Sfiso bust a handle.

Sfiso by Con-0-Tron June 1, 2018

Sfiso

A Teenage boy/girl that is always chasing after kids that is younger than his/her age just for attention or clout to prove a point. And always has every guys/girls number but never dates them

Boy : " Please don't be a Sfiso. Just be yourself.

Sfiso by Beaast mode November 3, 2020