Plastic friend 

A fake friend. Someone who will never have your back and turn on you for a dollar.

I'm done with you, your such a plastic friend

Plastic friend by Dodo November 29, 2016

Plastic friend 

Someone who claims to be your friend, but after a while will start to become a huge dipstick

Oh my god, you are such a plastic friend

Plastic friend by ShiftySpectre June 8, 2019

plastic friend 

The endless fountain of wealth otherwise known as a credit card.

Person 1: I'm broke, got any cash?
Person 2: Nope I'm out as well
Person 1: Oh hang on, we're saved, my wife left her plastic friend in my wallet!
Person 2: Hallelujah!

plastic friend by Jonny R December 12, 2005

Plastic friend and fake friend 

a plastic friend is someone who is your friend just for advantages and gives back only when he has to, not to get confused with a fake friend, which always is never really kind to you. These friends are usually friends with another one of your close friends that don't see how they're treating you.

Joe: have you seen Bill lately?
Kate: yeah, he was hanging out with Luke and Drew
Joe: Luke is such a plastic friend. Always taking and never giving!
Kate: Bill talked to me about it, he doesn't like it, but he's afraid to lose Drew.
Joe: he's also such a fake friend!
Kate: IKR! he's a Plastic friend and fake friend.

Plastic friend and fake friend by skjfdngv April 30, 2019

plastic cup friend 

A person you meet at an event or bar who is cool to hang out with at the time but you never talk to or hang out with again. A throw away friend.

He was really cool at the bar last night, but he's definitely a plastic cup friend.

plastic cup friend by tocathe1 May 24, 2014