An oblivious, ignorant, foolish girl. One who does not consider others.
Girl #1: "I only care about a few people in the world!!!" evil cackle.
Girl #2: OMG, she just pulled a 'Kelsey.'
A kelsey is somone who may appear to be nice on first meet but that will all come back and bite you in the ass! she is a fishy reject who needs a life and a pal who dont look like a whale...
man: whoa did u see that girl back there??
other man: yh shes a right kelsey...
A name for a girl who lurks facebook. Not only will she spend hours liking every one of your posts, she will know things about you that you don't even know about yourself.
Damn, that girl is a kelsey. She's been lurking facebook all day!
When someone initiates a conversation with the opposite gender and claims to others that the person they talked to actually started it and wouldn't shut up in order to avoid sounding desperate. usually occurs when a younger girl talks to an older guy
wow, she totally pulled a kelsey on you
A name for a girl who is very shady, and backstabbing. She'll say she's your best friend, but then try and ruin a relationship between you and your boyfriend. Kelsey usually will tell one boy she's dating him and keep two on the side for backup, in case her current boy isn't keeping her happy. Kelsey usually updates her profiles saying how "ugly" or "lonely" she is just so she can get the attention of others. Kelsey will also flirt with other boys when one of her boyfriends isn't around so she can feel like she's "loved". Usually has more friends than she can count, but still for some reason feels lonely, and also makes everything more dramatic then it seems.
So, I'm dating Kelsey now!
Yeah, you and three other guys...
the bitchiest girl you'll ever meet . guys think shes an angel , but in reality shes a whore that cares about nothing besides her hair , how much tighter she can get her shirt and skirt , and how many penises she can get inside her vagina at one time .
guy: hey , do you know that girl over there ? she seems so perfect .
girl: that's a kelsey , unless you want to pick up an std , stay away from her .
A sloppy whore. Generally tries to fuck every guy in the room at once. She's a stupid little bitch that likes "meat". If you have alcohol, you can get this slut. She loves to party and get shitfaced. Shes been fucked so many times she is the most loose girl EVER!
Guy 1 "Dude, Kelsey's vagina is so imminence that you can fit the whole U.S. Navy inside her!"
Guy 2 "Yea, all those semen!"
A MANGINA a girl with a large dick who puts it on her dresser and keeps it alive by keeping it in a jar....... Most annoying girl in the world and is really full of herself and thinks that everyone loves her... I mean who else has a fucking dick in a jar
Kelsey is a MANGINA MANGINA MANGINA