New and improved version of LMAO. It's funny because it contains the word mayonnaise, almost.
OMG!!1 I ownzor joo LMAOYONNAISE
An extended version of rofl. Saying this usually mocks people who say rofl. It's funny, trust me.
"ROFLPUFFS UR GAY I PWNED JOOR MOM FAGGOT NUB LOLZ!1!!11one!!11"
An intentional misspelling of "owned". It's more l33t than "pwned". YWNAGE!
"OMG I just ywned him with my glock LOLZ"