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Postest is the biggest unit of big stuff that can't be beat by anything. It's mostly used when you're in a predicament about who loves who more; if you say, "I love you mostest postest" you automatically win. Postest can't be beat by any more, most, tons, morers or any of that. The person you used "postest" on usually gets pretty mad because they can't beat you after you threw postest at them. All in all, postest is the biggest unit of big stuff that cannot be beat no matter what and no matter how hard you try.
I love you.

I love you more.

I love you most.

I love you mostest postest (:

No fuck that I love you more.
postest by baaaylaaay June 27, 2011
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When some protests something using posts.
On Facebook people postested me for being a troll.
Postest by SRJ DOOM May 2, 2014

Postest Modernism 

A movement that has been gaining popularity since the beginning of post-er modernism. So modern that it made post-er modernism not look not modern at all. It is best defined as everything is nothing and nothing is a green 2. While seeming non sensical to the untutored mind...wait, it doesn't matter.
1. If Oedipus and Jocasta didn't subscribe to the philosophy of Postest Modernism, they probably would not have gotten married.

2. Since I am a Postest Modernist, I am going to have sex with that dolphin!
Postest Modernism by post-Publius February 18, 2010

Postertizing 

Postertizing occurs when a poster to a message board or similar media attempts to sell a product or service.
Douglas was constantly postertizing on social media, always working in his insurance products.
Postertizing by I, Wreckerrr October 15, 2016

Postosterone

Hi levels of testosterone within a social media post.
The replys were full of postosterone! It quickly turned into a pissing contest.
Postosterone by Al Dente June 7, 2019

posester 

Pronounced POSE-ster. What hipsters really are. Though they put on the airs of being members of the illuminati (see the definition of hipster in Urban Dictionary), they are really just clones, wearing a uniform that is no different that any other, expresses no individuality, and is screaming hypocrisy. They have taken over previously cool neighborhoods like the Mission District in San Francisco. Though their clothing appears from a thrift shop, it is really from a 'vintage' clothing store, at best, or an over-priced chic shop trafficking in poser wear. Though they want to appear free thinking, they gravitate toward sameness. Their obsession with the latest e-gadgetry exemplifies their vacuous nature. Though they claim to be into a simple existence, they have driven up the cost of housing in previously cool urban areas. Though they work in Silicon Valley or similar areas, they 'reverse commute' in plush e-busses FROM the City. They are the same as preppy yuppies from the early 80's, just a different uniform, so their hypocritical nature makes them 'posesters.'
I really miss living in the City. So much to do, nooks and crannies, just a great mix of all kinds of folks.

Ya, me, too. But I had to leave, it has really changed. The posesters have taken over. Even the Mission. It's like Cow Hollow now, just in drab.

No . . . !!!!
posester by The Original Tankboy February 14, 2014

Postistic 

Whenever someone posts something on Facebook or the internet containing a statistic / agenda / etc or whatever and thinks that sharing it is a "Form of Activism". (Aka Postistics)
I saw a postistic that showed the dangers of water. 100% of drownings happen because of water!! Let's do something about it!
Postistic by Big E Dude February 27, 2013