A 4F is a person who is not necessarily a fat person but more of a looser.
4F stands for FATTY FATTY FUCK FACE.

sometimes theres is 3f and 5f you can allways add on another FATTY
Hey HOE why you just being a 4F today?
by Anne is cool June 5, 2006
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Sony Roolz is a 4F because all he ever talks about is how Final Fantasy is the best RPG ever.
by hahaa September 21, 2003
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Here comes the 4f's.
by Pontz April 30, 2015
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The four points in the forever rule are:
1. Feed em
2. Finance them
3. Fuck them
4. or Fuck off
It's all about the 4f Rule...If you're not feeding me, financing me, or fucking me, you have no right to tell me what to do, so fuck off !!!
by DakiniGirl May 13, 2017
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4F-MPH is pharmaceutical drug that was originally designed to medicate people that have Attention Deficit Hyperactivity Disorder (ADHD).

It was also put forward as a possible medication to help reduce dependency on cocaine for addicted users.

It is now commonly known amongst recreational drug users by the following names:
- super quick (quickie)
- charlie2 (becasue if it longer lasting effect and its similar chemical structure to cocaine i.e. charlie)
- turbo meth (turbo)
- Isao (abbreviated from Isao Machii, who is strongly regarded to have superhuman abilities which user's report to feel when ingesting the drug)
Recreational drug users like to take 4f-mph or turbo meth as it is commonly known, as a stronger and cleaner alternative to methamphetamine.
Today I am going to precribe you 4F-MPH.
by SweetpuffOriginal November 29, 2020
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For fuck sake. expression used to emphasize extreme displeasure or frustration regarding an unfavorable situation or outcome. usually used when texting to save key strokes and speed up communication.
Ivan asked Sally if she knew where the camping equipment was. Sally replied;
"Yes, I know where it is. It's packed all the way in the back of my storage unit, 4FS"
by GonnaBeFoggy August 4, 2022
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