Lsmip 

The acranim for "Laughing so much I pee" this is a common phrase I use and wanted others to use.

Guy1(via text): Gawd im tired
Guy2(via text): That's what she said!
Guy1(via text): Lsmip! OMG thats hilarios!

Lsmip by Anettles June 16, 2010

Lsmic 

An internet short for "laughing so much I'm crying" Possibly made up by the youtuber "thewinekone" in his video "yours randomly"

More believable than ROFL

Mike: ... and then he ate it!
Charlie: LSMIC

Lsmic by Jessha October 24, 2007

LSMISOYNK 

Modern term like LOL or ROFL, meaning:

"laughing so much I stomped on your new kitten".

A popular phrase, which definitely needed shortening to an easy to remember version like LSMISOYNK.

Person 1: I found that bloke in a public toilet, "having fun" with baked beans

Person 2: LSMISOYNK

LSMISOYNK by Backrub the terrorist June 6, 2010

LSMINHAHA 

Acronnym for Laughing So Much I Nearly Had A Heart Attack

Often used as either a melodramatic, or sarcastic remark.

Janet: "...And Then The Priest Walked In On Them!"

John: "Ha, LSMINHAHA"
or
John: "Wow, Rofl, Lmao, Lsminhaha... NOT! ¬¬"

LSMINHAHA by Jayisfap January 20, 2010

lsmif 

laughing so much i farted.

Joyce: You know what? She fell in the pool!
Andrea: LSMIF! are you serious?

lsmif by Geik September 27, 2007

LSHIP 

Laughing so hard I've prolapsed

Oh! That is funny, LSHIP!

LSHIP by Pooin June 25, 2010

LSHIPMP 

Laughing So Hard I Peed My Pants

OMG THAT JOKE HAD ME LSHIPMP

LSHIPMP by Jack Figglehorn May 24, 2009