Top Definition
1. Something that is extreme, intense, or just flat-out crazy!
2. Can also describe the state of being physically tired but mentally hyper (and vice versa)

ORIGIN: American. originated on sept. 22, 2007, in Andover, MA during and AIM conversation between two young people named Ellie and Matt. Has been a popular phrase ever since.
Oh my, Ellie, those shenanigans you did a were pretty intensifyingnessedcrazyilfied
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