Top Definition
A person that is slow to catch on to an idea or the punchline of a joke

Derived from the idea of E4+1 showing programs an hour later then E4
A: A brain walks into a bar and asks for a pint, the bartender says i can't serve you, you're out of your head!

B: I don't get it...

(time and a bit later...)

B: Oh i get it now!

A: OMG, what an E4+1
by Sugar666 January 22, 2008

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