look up any word, like dirty sanchez:
indian drug dealer
dude she's an allis, i wouldn't go there, shes dealing curry powder
by kdotdotdot October 16, 2010
(noun:) One who is untrustworthy of time
You're late for class again. I don't like that Alli inside of you!
by mean dude October 11, 2008
a girl who is PMSy ALLL THE TIME, and gets in a fight with you everyday, then acts all normal when she thinks its over.
omg, shes being such an alli.
alli is so alli
by booper3 June 12, 2009
Rude. Annyoing. And is obsessed with anime characters. No ones likes hers and can't get any guys. Worse friend ever. And has no life! AND HAS NO BOOBS!
Girl 1: Ew Alli is walking this way
Girl 2: LETS RUN!
Girl 1: Ew She's so flat!
Girl 2: Right she's a whore too!
by Aleah G. November 09, 2011
Back stabbing, evil, stupid, bitch. If you have a man, and he is friends with an Alli, you better hold him close because she will try to steal him with her fake pushed up breasts, and her stupid laugh.
Friend 1: I can't believe Kyle broke up with Madison.. she was such a great girl

Friend 2: Yeah, it's cause he meet Alli and she screwed it up.
by kbllbk August 13, 2011
When someone says they did an Alli they mean they made a mistake is a bitch or a wench was drunk
geez ...did you see that Alli in the spy pub last night? She was amusing!
by Alli Crawfurd March 11, 2008