A foreign word for some sort of condiment; probably mustard from the looks on the bottle.

Also, penis backwards.
"Hey, I imported a bottle of mustard, it says sinep on it..."
"Heh, silly foreigners, putting the word 'penis' backwards on mustard..."
by Golbeeez June 13, 2006
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The word "penis" backwards, pronounced "sin-eep". Is often fun to use in voice recording programs. When played backwards, this recording can scare small children. Saying the word "sinep" three times around any woman will cause them to fall mouth-first onto your cock.
Your fat fucking face looks like it's had too much sinep in it.
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a cock that is posistioned inward. most cases jutting into the man's hips. (looks like a second bellybutton)
john gannon penis is so small it points inward like a sinep.
by thomas raines April 5, 2003
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SINEPsinep is penis backwards go around and write sinep on ur friends paper or ne where without ne one knowin wut it means. till teachers find out thn ur fucked...
haha i wrote sinep on this fag and he thought he was in a club, wut a douche
by SKATER ROB <HAHA May 17, 2006
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Mustard backwards in Estonian (not to be confused with sinnep for Icelandic)
Joe: I love the taste of sinep! (Estonian: Ma armastan peenise maitset; Icelandic: Ég elska bragðið af typpinu)
by DaCuteRaccoon January 19, 2022
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bensleys sinep is long
by Evan c best September 11, 2008
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