Posty, a nickname for Post Malone or his real name Austin Richard Post, is what pretty much all his fans and friends call him. He even refers to himself as Posty because he is Young Stoney and he does what he wants.
Guy: “Yo have you heard of Posty?”
Girl: “Yeah he’s fire!”
by postylover November 11, 2019
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An erection, woody, boner, stiffy, hard on, etc...
I got a posty when she took off her shirt.
by Wolfeh March 21, 2004
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Posty is a kind person and is a part of a team called the blue gang
Posty is a kind hearted person
by Super Coopz June 25, 2019
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A "post" bachelor party. A bachelor party for the guy AFTER he gets married, usually involving bars, drinking, strip clubs, strippers, etc. The wife may or may not be informed of the event. Occurs when the groom has eloped with the bride or has got married far from his friends. When he returns, the postie is thrown in his honour.
Have you seen Peter today?

No way, his buddies threw him a Postie last night and now he's sleeping off the hangover. His wife is furious!
by Predro April 29, 2010
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Someone that over posts on a messageboard or posts new threads constantly. Usually associated with hyperbole and !!!!!!!! - i.e. bloodbought.
Bloodbought is really posty.
by checkplease February 10, 2008
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(noun)Someone who usually is right either because they base what they are saying on knowledge or because their guess is intuitive a normally also right.
"I have to acknowledge that Simon was right again; what a Posti!"
by Ivoryish May 14, 2007
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