SIIHP 

While the S can have varing terms it generally means
Slip it in her pooper, however the S can mean, Stick, Shove, Slam, Sneak, or Stuff

Person A - You going out with that chick tonight?
Person B - Yeah
Person A - Don't forget to SIIHP

SIIHP by Garret Werstiuk May 16, 2006

SIIHP 

Acronym for "Stick it in her"

if you can't figure out the P part, you'll probably never use (or experience) this acronym anyway.

Who cares if it's "that time of the month", I say go ahead and SIIHP

SIIHP by Jeffrey Ross May 8, 2006

siimpstars 

A homosexual black/white human being who is very hawt and meem lord. Also known as raymond (gaymond). He has a big cock. We love him.

Is that siimpstars? The guy with the mega schlong?

siimpstars by fl4ent May 26, 2021

Siip 

Created by @wyvellie on the Official RFA Discord Server. Misspelling of SIMP. Stands for "Special, Impressive, Intelligent, Person". Used to describe Jumin Han from Mystic Messenger.

"Simp stands for Special, Impressive, Intelligent, Person!"
"Wait, isnt that 'Siip'?"

Siip by KennedySofine May 27, 2020

SIIHPAPP 

Stick It In Her Pooper And Post Pics. A term used on Internet forums usually when a female is mentioned by a poster. It is believed to have originated at ar15.com.

TheRedHorseman: So, I think this girl at work likes me, what should I do?
Sgtar15: Stick it in her pooper and post pics!

SIIHPAPP by ARF March 14, 2005

SIIHBAP 

stick it in her butt and pee.SIIHBAP

"look at that bitch"
"i wanna stick it in her butt and pee!(SIIhBAP)"

SIIHBAP by meat spinner September 13, 2008

siipsi

Siipsi means a great drawer/artist, People use it for people who draw faces like the ones in "The 4 Sins" characters.

*draws*

-wow im such a siipsi

siipsi by xy.k August 25, 2021