Being or having the attribute of coolness. It can be used as the highest form of a compliment.
Aye dog, you’re delusional!

Hey, invite Jim, he’s so delusional
by Jimisdelusionaldog December 4, 2017
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A psychotic IRC troll with anti social personality disorder, ie. a Sociopath. He has a very tiny penis and MASSIVE BALLS.
I can’t think of anything worse after a night of drinking than waking up next to someone not able to remember their name, how you met, or why they’re dead. I must be Delusional.
by Someone420 April 26, 2009
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Eddy Senior from Hecky Grammar

hes one out of context son of a bitch
Even though all the Leeds Fest tickets were sold out, Eddy still thought he could buy one

Eddy: Don't be so sparse
Gav + Luke: Do you even know what that word means ya daft cunt?
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Never changing your opinion even faced with overwhelming evidence is so delusional man. That's so Tbates of you.
by Alternate guy85 July 12, 2023
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