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1. A random word stem collected from a popular internet word (ie, post) and utilized by internet spam bots to form a new word. Common affixes include one to four length letters, or a jumble of letters, used in an attempt to cover as many unique combinations as possible to drive traffic to their websites.

2. A frequent typo, randomly typed letters, or misspelling by internet users.

3. Common abbreviation for "Please Only Save The Friendly Unicorns", an organization dedicated to the preservation of friendly unicorns located in the Canadian wilderness.

4. Common abbreviation for "Pictures Or Shut The F* Up", a definition conceived by a single individual but not actually common or used at all. Unless you count that one time ten years ago.

5. Or, this word could mean absolutely nothing at all and it's just a completely random word created with no real meaning or common use in the real world or the internet, and anyone can choose how they want to define the word. This is just an example of how easy it is to submit a definition and have it accepted by editors who approve almost anything based entirely on how funny it is and if the definition contains no spelling errors.
"C'mon, POSTFU."
"Hey man! POSTFU."
"Oh no, it's POSTFU."
POSTFU by Symguy June 23, 2013
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1. "Pics Or Shut The F*ck Up". Used on message boards to mean that the author is talking about something that requires visual evidence that should either be produced or the matter should be dropped.
"I met this hot chick over at the bar last night."
"C'mon, POSTFU."
POSTFU by Raiderpower September 12, 2006

Smolka's Postulate 

There is a fundamental connection between technology, physical reality and nature. And the parallels between technology and nature are astounding.
Smolka's Postulate reveals that cars have systems that match that of animals; ie: gas tank - stomach, catalytic converter - liver, carburetor - lungs and so on. A computer hard drive needs to defrag every so often, like a mind needs to dream(believing that doing so consolidates information in the brain).
Smolka's Postulate by Stephan Smolka September 5, 2009

postfartum depression 

When you let out such a relieving, loud, or satisfying fart that you get depressed when its finally over.
Joe got a bad case of postfartum depression after he perfectly replicated a trumpet with his ass.
postfartum depression by P-scrizzle December 17, 2015

Standard Bitch Posture [SBP] 

The postural position taken by females of all races. Can be identified by the one hand on the hip and the other with index or pinky finger pointed in the face of the bitchee (person to be bitched out) This universal stance is usually attributed to 'Da Hood' but may also be seen anywhere from a corporate office to a country kitchen.
Who is Maureen cussing out?

I don't know but they must have pissed her off: she taken the Standard Bitch Posture!
A hot 3D real waifu owned by UnLuckyL.
postu is the hottest 3D waifu out there.
postu by A 5aze5aez October 15, 2020

Zoeb's Postulate

A postulate that can be used to conclude anything without any counter-arguments to object it.

It defies Newton's Laws, objects Chuck Norris, and is Bruce Lee's secret weapon.
"If I have 5 apples and eat 2 apples, how much apples do I have?"
"You have 9 apples"
"No...how do you get 9 apples?"
"Zoeb's Postulate"
Zoeb's Postulate by Demolition5 February 3, 2012