(adj.) Insane, particularly if characterised by exaggerated or cartoonish behaviour ; gibbering in an nonsensical fashion. (After Roger Irrelevant in Viz magazine.)
He stood in the corner shouting, "Wibble! Wibble! More beetroot, Archdeacon?" I'm afraid he's gone completely hatstand.
by Johnny S. April 01, 2003
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Completely mad. Bonkers. Cuckoo
You know that girl I was seeing? Well, it turns out she's totally hatstand.
by Craig May 10, 2004
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Possibly originating from a man who kept trying to put his wife on a hatstand because he thought she was a hat. Chronicles by Oliver Sacks in his book “The man who thought his wife was a hat”.
Hatstand means crazy.
The dictator of Azerbaijan is completely hatstand.
by IngyG May 17, 2020
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Person who must be avoided if at all possible. Utter, utter, utter fucking twat. A useless, irritating, boring, stuttering fuckwit.

For all the good they do, they may as well be stood in the corner doing fuck all.

Much like a Hatstand.
It is my considered opinion that that the government minister is, indeed, a fucking hatstand.
by Cheerful John January 23, 2012
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A sexual act in which a male stands completely naked in the corner of a room while his companion attempts to jump onto his erect penis. Much in the same fashion as throwing a hat across a room onto a hatstand...but in this scenario the hat is either someone's vagina or anus.
Tim: "Why are you standing naked in the corner of your room with an erection Jason?"

Jason: "Because we're about to do an Albuquerque Hatstand. Sarah is just in the bathroom getting ready. Now could you get out of my bedroom please Tim?"
by Volit August 28, 2014
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