Friend pet 

When your friend acts like your personal pet and does thing for you on his/her own

My friend is a friend pet

Friend pet by EPIXGAMING February 17, 2019

pet-friend 

When you like making fun of one of your friends usually all the time, that friend is your pet-friend

Andy is always making fun of her pet-friends Charlie and Daniel.

pet-friend by Andy S² November 20, 2015

My friend Greg's pet cat named Gus 

My friend Greg has a pet cat named Gus. This is for him.

oh that cat there is my friend greg's pet cat named Gus

My friend Greg's pet cat named Gus by coole29_ November 8, 2021

A friend of a friend is roommates with Peter

Expresses how interconnected our world is.

Gregory: "I can't believe Salvador and Danny know each other. That's so weird."

Al: "Well, you know what they say. A friend of a friend is roommates with Peter."

A friend of a friend is roommates with Peter by Howlingcaliper June 17, 2012

Chicken Fried Pete 

This guys real name is Peter, but he has a weird obsession with chickens, and memes

“Lord, it’s Chicken Fried Pete, and hes holding a bottle full of purple kool-aid”

Chicken Fried Pete by I’mGerardWayFromP!AtThePilotS February 13, 2020

friendette 

from friend and -ette (feminine gender suffix (marker) of French provenance).
A female friend.

Any word + -ette states a female.
Friend (common gender) + -ette = friendette (feminine gender).
Dude (male gender) + -ette = dudette (feminine gender).

friendette by Yet Another Daniel Nielsen November 20, 2011

Friendipetter 

A friend that all they do when they come over is pet your dog.

Should I invite Jacob to the party?

Nah, he's a friendipetter. All he'll do is hang with your dog.

Friendipetter by jutlan January 13, 2021