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6.
Noun. A slang term for asshole. In context, may also mean douchbag
John: Shut the fuck up bitch.
Jill: Quit being such a Seiji!!
by I hate Seiji's May 25, 2009
 
1.
Awesome. Simply awesome.
Seiji = Awesome
by definingtheworld! February 06, 2010
 
2.
1. the sexiest most beautiful asian you will ever see. everyone loves him, hes sweet and charming and is the only asian to ever to have a big dick. he does some dumbass stuff sometimes. everyone thinks hes on drugs, but he just has no common sense.
1."omg, you know that guy seiji?"

"yeah hes so amazing i love him!"
2."wow seiji is cool, too bad hes on drugs."

"hes not."

"are you kidding he just tried to smoke a chair leg!"

"hes just dumb."

"oh."
by theneverendingcircle January 03, 2012
 
3.
a good name for your asian cat, or a penguin.
"aww your cats so cute, whats his name?"
"seiji"
"sooo... its an asian cat?"
"yeah."
by catlover34334 January 03, 2012
 
4.
the sexiest, most pimping asian you will ever see. seems like hes on drugs but he just has no common sense. the only asian with a big dick.
"wow that guy is a total seiji, he totally just fucked that girl and then dumped her."
"yeah isnt he on drugs?"
"naw hes just stupid."
"pretty hot though."
"omg yeah."
by jennyfromnoneofyourbusiness January 01, 2012
 
5.
a backstabbing bitch who doesnt care about your feelings or anything about you, and doesn't even care about themsekves.
Kayla is such a seiji!!!
by you_wish_you_knew May 25, 2009
 
7.
Term for very small penis.
Wow you have a seiji!
by CrazyJoefromtexas January 31, 2009