2 definitions by Fate_UK

The perfect Lare-Inducing word. Used to annoy others and can also be used as a replacement for the ever-boring lol
Mike: look what I did to Andy, laff
Mark: Laff nice 1
by Fate_UK January 14, 2006
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-short for Your mum or Ya mum etc..
-Used to annoy other, often sarcasticly but can also be used seriously
Adam: That was awesome!
Tim: YM was awesome last night...
Adam Huh? shut up u prick
Tim: YM likes prick...
by Fate_UK January 15, 2006
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