A girl who doesn't know her head from her ass. Someone who thinks she's better than she actually is. Quite bitchy and slutty to be honest. OH! And stupid. Very stupid.
by wittlewion June 17, 2014
Get the Sierramug. An overbearing, overly emotional woman with no sense of giving her significant other space. Is known for suffocating the person of her affection to the point where even sepuku isn't a viable means of escape.
by Str8razor666 December 13, 2017
Get the Sierramug. A girl that is actually such a bitch and she smokes a lot of pot. She is very petty and you can’t trust her. She always wants to make things about herself.
by Schillyisahotdilf June 8, 2019
Get the Sierramug. by Bigtittybitch101 November 9, 2019
Get the Sierramug. A clingy, scary, stalker. Watches you silently in a corner, and drools over you in her sleep. God and Jesus yeet her out of existence when she dies, and she is reancarnated into another being, who will seek her prey, Ryan, until he dies. Plays football outside, but claims is a dancer. Smells Ryan's hair whenever around him. Quakes when breathing same air as Ryan.
Boy: Woah, Sierra sure is menecing today, look at that knife she brought.
Boy 2: Yeah bro. I feel bad for Ryan, hes gonna die today.
Boy 2: Yeah bro. I feel bad for Ryan, hes gonna die today.
by MrDudeBro95 October 23, 2018
Get the Sierramug. A really pretty girl that you hate because she is a hoe and steals aiden from you...but he likes you more
by Lmaooo.bitchhhh February 20, 2019
Get the Sierramug. In the most basic definition, a slut. Someone who sleeps around and is scared of commitment. Basically a fuck boy, except female. Someone who is manipulative and only wants the physical aspect of a relationship.
Guy 1: "I'm thinking about asking out Sierra."
Guy 2: "Dude dont she's totally gonna play you , she's done it before."
Guy 2: "Dude dont she's totally gonna play you , she's done it before."
by Craiglist killer November 13, 2016
Get the Sierramug.