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a cute little man from youtube. he appears to have no neck and moves like a penguin. seen mostly on dcigs.
dcigs sefus
by nickipop June 19, 2011
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Sefu is Japanese slang for "Sex Friend"

It is an aqaintance who you is not your partner, who you meet for the sole purpose of no strings attached sex.
I met my Sefu at a love hotel
by Pong February 08, 2004
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One who stains papers with Narusegawa on it.
"I'm not going to clean that off, Sefu. You're just going to have to read that manga like it is."
by Lumi January 05, 2004
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