Laughing So Hard That I Blew My Load. An expression use when LOL, or even LAWL just will not suffice.
Johnny: That was the funniest shit I've ever seen
Ronnie: LSHTIBML
Johnny: Damn bro... you're cleaning that up.
Ronnie: LSHTIBML
Johnny: Damn bro... you're cleaning that up.
by Jake Slade November 09, 2011