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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

Plotfuck 

1)When the plot of a movie is completely and utterly ruined by a god awful director. Usually based on a good book which is totally murdered.

2)When a secret scheme to get something (usually illegal) is ruined by one or more idiots.

3)When a small area of land is ruined by a gardener who is trying to be self sufficient because its fashionable, but screws up instead. Or they are just a bad gardener.
1)'Dude I watched Angels & Demons over the weekend!'
'Oh man, thats 146 minutes of your life you'll never get back! It was such a plotfuck!'

2)'I was plotting to get revenge on my brother by putting his hand in warm water. He found out before I did it and I got grounded. It was such a plotfuck!'

3)'I read about self sufficiency in a hip magazine but I plotfucked and now I just use it as a dump. Its great!'
Plotfuck by h-sizzler August 30, 2010
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
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
If you think you can write better code then PROSTFU
PROSTFU by 0xDUDE November 10, 2018
If you think you write better code then PROSTFU
PROSTFU by 0xDUDE November 10, 2018