Top Definition
Abbreviation for Best Friend For Life No Matter What.

usually used by girls. Not guys.
Sarah- Oh my god Josi, you're like, my BFFLNMW!
Josi- I know! you are too!
#friend #best friend #bffl #nmw #bfflnmw
by Guilty1990 September 04, 2007
10 Words related to BFFLNMW
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