Multi-friend 

When a person is able (or not able) to have more than one friendship, and/or be nice to more than one person at a time.

Girl: Have you talked to Harriet today?

Girl2: No, have you?
Girl: Yeah.
Girl2: Oh, she must not be able to multi-friend again.

Or

Sarah is so nice to everyone! She can totally multi-friend!!

Multi-friend by pookey32 October 21, 2009

Target friend 

A person which you see, know you want to be friends with, and set about befriending.

That kid Jeremy was so funny last night. I think he might be a target friend, I'd really like to get to know him.

Target friend by lacoste0708 November 9, 2010

somewhat friend 

A friend that is only useful when you have nothing better to do

I guess I will call my somewhat friend back today, since I have nothing better to do

somewhat friend by REALIST_E June 22, 2014

Flea Friend 

A friend who used to swear they're your bestie then one day ditches you at the drop of a hat to hang out with a completely new group who ironically become the entire world to them.

They will then act like you're an annoyance when you want to see them, but if they run into you, act like you're their long lost love and swear how you need to do more together. It never happens.

Girl 1: I just don't understand, last week she wanted to see me every day and now she's posting 500 pictures of herself and those other girls and won't talk to me

Girl 2: Forget her; she's a flea friend - bouncing from body to body.

Flea Friend by HHalftone July 1, 2014

Best Friend 

Someone you can trust. Someone you can never replace. Best Friends are even closer than just friends. They are like your sibling but even closer. They are loyal. Best Friends are friends that you love and they will never leave you. They love you for who you are and accept any flaws. If they leave and never come back, they are not considered a Best Friend. Best friends always have your back.

That girl over there is my Best Friend, I love her to death.

I can only trust my Best Friend.
My Best Friend is the best.
I have so much fun with my Best Friend.

Best Friend by ChanyeolsLovee June 10, 2015

Ivaginary Friend

The girl one of your male friends claims to have had sex with after being separated from the rest of your group (boys, crew, etc.) for all or the majority of a weekend night. The rest of your group has no way of ascertaining any information about whether your friend actually lost his virginity or who the girl is. She lives in a big city or goes to a huge university, has a generic first name, no memorable last name, no phone number, and no identifiable social media.

Crew-member A: John keeps going on about hooking-up with his ivaginary friend.
Crew-member B: Yeah, how long do you think it'll be before he actually gets laid?
Crew-member A: With his game, that's the best he'll do for a while.

Ivaginary Friend by goyo May 20, 2016

Best friend 

The person u love so much that you end up hating their guts

why do you always do that best friend?

Best friend by Liana and Alexa 04210922 March 15, 2017