That chick who always acts as if she is your mother. She will reprimand you at any given time, though usually for acceptable reasons. Nikki's are dream crushers, especially when those dreams involve betta fish and/or rolling chair races. She is also a bad person. A Nikki's soul-mate most definitely is named Scott.
Boy: Let's get a Betta fish!

Boy: Man youre a nikki
Girl: I love Scott

Boy 1: Let's race rolling chairs
Boy 2: Ok Dude
Boy 1: Dude she is such a nikki.
by I AM GOD CD October 02, 2013
an old lady/man who wears leotards and comments on facebook status
got a notifaction . oh dear lord its the nikki again
by youraleotard November 24, 2011
The most beautiful girl in the world. She has a dark past, but you must look past it to the beautiful person she is. She thinks she is not much, but she is the best. Always boost her self confidence, because she deserves it. Once you find a Nikki, never let her go. She is a once in a lifetime chance that you should never pass up.
"Dude, I think I just found a Nikki."

"No way! Keep her dude,"
by I-like-your-socks December 07, 2014
A try hard ugly bitch, that is only interested in men that have girlfriends or partners and then gets pregnant to them. a real homewrecking whore!
That bitch just stole my Boyfriend! Wow she must be pulling a Nikki!
by wingdawongnumba October 01, 2011
A word to describe a whale-like person. One who is fat. One who eats a lot of food. Or a person who steals other people's food as well.
That girl is such a Nikki! See how much she eats?!
by BEY2513 July 25, 2011
A selfish bitch that fucks everybody she meets
Jason "dude me and Nikki have been together for 2 months"
Zac "me and Nikki have been fucking for a month now"
Jason "..."
by babygurl96 January 14, 2012
The slang term for cigarettes. Origin is from the word nicotine. Similar to the way other drugs have nicknames to represent them. (I.e. Mary Jane, Molly, Lucy, Vicki, etc.)

Created by the rapper Logic on his debut album, "Under Pressure"
"Man, I need Nikki! I'm so stressed right now"
After that blunt, Nikki sounds great right now...
I can barely breathe, my lungs are probably black as hell. Thanks Nikki!
by The Bix October 25, 2014

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