Definitions by synthetic42

Overheard on Facebook

A non-creepy way of bringing up something you read on Facebook, usually about a conversation not involving you

"I overheard on Facebook that Sam is going to that party on Friday"
"OMG you stalker!"

A joke so funny that it will make you laugh yourself to sleep.

Dude, I heard a joke yesterday that was a total LOL-a-bye. I laughed so hard I think I may have literally dozed off for a while.