1 definition by Fatontheinside

Top Definition
A Person who you do not like; A.K.A A Code name.
SWMNBN: She Who Must Not Be Named
A very annoying person that you just can't stand:)
Some Dude : Whoa Other DUde! WHo is that Ugly Woman??

Other Dude : OH! THat is Just SWMNBN.

Some Dude : OH! Awesome.. Should I go see if she wants to go for coffee??

Other Dude : WHOA MAN!!!
No, just no.. go for that Other non SWMNBN Woman. She is much more pretty.
by Fatontheinside December 23, 2011

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