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1 definition by Rockstalker

Not safe for Muppets; An outfit or a picture that would get banned on Sesame Street after Katy Perry was censored for her cleavage in her duet with Elmo.
Your Facebook profile pic is NSFM, too much boobage!
That top is so NSFM, I can practically see nipple!
by Rockstalker September 24, 2010
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