The act of constantly posting on Facebook - checking in places, posting pictures, updating status. Seen most often after a break-up when trying to appear happy and normal. Also common when on vacation.
After she broke up with John, she was so posty, trying to make him jealous.

He was so posty on vacation, we didn't even want to hear about the trip when he got back.
by Lucky#7 July 1, 2013
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A Posti is a german streamer who's got a tendency to butcher names. While the women struggle to resist a Posti's smile, laugh and outgoing personality, they're often pushed away by his terrible jokes and odd addiction to kuva farming. Posti can be used as both an adjective and a noun.
I've been streaming kuva farming all day today, I feel like such a Posti!

I saw a name appear and pronounced it backwards, really Posti'd that name.
by TwitchDrops January 14, 2019
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Postie, an Aussie slang term for Postman, the bloke that delivers your mail and parcels.
Mate 1: Oi, have ya checked the mail yet?
Mate 2: Nah mate, I haven't heard the postie come around yet
by Stingy M8 December 30, 2016
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In academic circles, a noun for someone who engages in post-structuralist, post-modern or post-colonial research. Also can be used as an adjective to describe anything relating to this research. Generally used somewhat pejoratively.
That new researcher is working on subalternality in Italian refugee policy. She's a total postie.

So are you going to the postie conference? I hear that they're giving presentations on Agamben and Derrida.
by homo_sacer September 13, 2010
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Post work drinks. Usually occuring immediately following the commencement of a mundane office job. pl. posties
Friday night lets meet at the pub accross the street from the office for a couple of posties.
by T-Bombs August 8, 2005
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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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