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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
Related Words
pstfu pstfubibutfo PSTFUD PSTFUYDB pitfu POSTFU potfuck PSTFAB. PTFU putfuck

potfucker 

A person that has sex with a flower pot is called a, potfucker
potfucker by aodsjasd February 5, 2014
A motivational urging. Usually in FPS games such as counterstrike when players aren't following the object of the game and wasting everyones time.
Ir1337Hoser is such a llama. All he does is camp spawn. He needs to PITFU.
pitfu by Hypo May 8, 2004
U need to PITFU
pitfu by Prominx September 9, 2003
The act of removing a robe whilst seductive music is playing and then asking if you want to Putfuck

Also known as an extremely big douche who will probably get an erection when talking to a pregnant woman
Wow, hes such a dick, he's probably a putfuck
putfuck by nickyb134576 June 14, 2011
When you check your facebook page and a facebook whore has posted on every status, link, picture or wall post. Essentially it's when a person feels it necessary to post on everything you say b/c they are either bored and have no life or they have access to facebook via a mobile device and are not paying attention to the road while driving or not working when getting paid to....
God damn it! This bitch has postfucked my facebook page. She has to comment on everything within seconds of me adding a comment!
Postfuck by Uncle Timmy September 25, 2009