IM language for Pissing Myself Laughing. Mostly it's not literally meant but it's commonly used when something strikes someone as extremely funny. Somewhat an alternative for rofl or lmao.
"I can't get over the look on her face when I walked in"
"hahahahahha omg"
"Pmsl"
A British texting abbreviation. Unlike the USA who uses LMAO (laughing my ass off), the British use PMSL, which means "Pissed Myself Laughing."
Darnell: Everyone knows 6 is afraid of 7 because 7 ate 9. But why DID 7 eat 9?
Chris: I don't know.
Darnell: Because 9 has to have 3 squared meals a day! Hehe... math jokes.
Chris: HAHAHA PMSL