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1.
Mafan is a word derived from mandarin chinese that conveys the feeling of being pained or annoyed by something, about the same meaning as 'troublesome' or 'bothersome'.

Contrary to other definitions on urban dictionary, make sure you do NOT pronounce the "fan" element like a football fan. Instead it should sound more like "mah" "fahn"- the same fan sound as "fondue". In general usage it is roughly equivalent to the phrase "pain in the ass".

Also known to many as ma fan
1. I would go to the grocery store today, but its too mafan

2. Why did you give me all this shit to carry, you have no idea how mafan that is.

3. She is really hot, but she already has three kids, its too mafan to go after her.
by Drew&Elliott January 05, 2011
 
2.
Problems or difficulties
Boy! Did that cop cause me some ma fan when he pulled me over!
by Roy Bates October 03, 2005
 
3.
1.To trouble someone
2.Problem and difficulties
Hey if you are going on a holiday can u get me this and that?
erm, i change my mind, dont want to ma fan you.
by hix October 24, 2007
 
4.
Derived from Mandarin, the term "ma'fan" (pronounced "ma" like mama/papa, and "fan" like football fan) is literally translated as "crazy annoyance".
Used by many foreigners in China, it expresses the feeling of chaotic despair, or an annoying situation.
Brian: How's that powerpoint presentation coming along?
Paul: It's... well, mafan. I don't think I'm going to get any sleep for the next 3 days, at least.

OR

Julia: So what's happening between you and Fred?
Amy: Mafan! He never told me he had a girlfriend, and now SHE's hating on me like a mofo.
by kris91 May 27, 2008