'Laugh Out Loud' with a hint of 'you're a dumbass'.
Bob: Hey man, I had sex with your mom.
Phillip: My mom's dead.
Bob: Oh, hey, sorry, man, I didn't know.
Phillip: Dude, you just saw me with my mom yesterday, remember?
Bob: Oh yeah.
Phillip: lolface!
Variation of 'Jesus' first invented by Duke Ellington so as not to be beaten by nuns. Borrowed by Frank Zappa and, from there, by Matt G.
Jesus: Daaaaad, do I have a brother.
God: Uh, no, not that I know of.
Jesus: Then who's this 'Jebus' everyone keeps talking about?