Top definition
To have ADHD, ADD or any other form of not being able to pay attention. Someone so distracted that the most random, unimportant thing could occur and they'd go AFK.
*Conversation happening*
"What do you think, Mark?"
*Silence*
Kane: Oh, he went brb jellyfish.
*Two hours later*
Mark: I'm back guise, I have cheesey chicken
by StephanieQ January 23, 2009
Get the mug
Get a brb jellyfish mug for your Facebook friend Riley.