Formiliar 

Someone you may have been formally introduced to, but can't quite remember. This makes introducing yourself to them (possibly for the second time) a difficult decision.

"The blonde in the red dress looks formiliar, I shouldn't drink so much at these formal get togethers"

Formiliar by Johnny Glasgow April 30, 2013

Repetitive Familiarity Amnesia 

The inability to remember if you did something you do every day.

Every morning when you leave the house, you push the button on the garage door remote closing the garage door. Then 10 minutes later, you can’t recall if you closed the garage door because you do the exact same action at the exact same time every morning, so they all blend together and you couldn’t tell if your memory was from that morning or any of the previous mornings where you went through the same motions like you have countless times before. You just experienced Repetitive Familiarity Amnesia.

Repetitive Familiarity Amnesia by TheChrisenator July 20, 2021

gettin' too familiar 

Getting too comfortable with a person.

Dat nigga gettin' too familiar, Imma have to whip his ass.

gettin' too familiar by Dom the Bomb February 20, 2008

societal familiarity disorder (SFD) 

When two people spend a lot of time together and begin to develop feelings for each other. But they actually are just assuming society's view on relationships. That people are suppose to be in pairs. So two good friends think they're in a romantic relationship.

John and Jane are both unemployed, so they have a lot of time to spend together. They start getting feelings that they mistaken as romance. They start really dating, get jobs and realize they were suffering from societal familiarity disorder (SFD)!

societal familiarity disorder (SFD) by TheGoonies February 7, 2014

I owe you an apology. I was not familiar with your game 

A fraze once made popular by NBA Legend Shaquille O'Neil reacting to a surprisingly good performance by a current NBA Player that he never thought was able to put on the court, undermining his class up until this very point in time.

This term is now commonly used to describing a situation in which an individual (mostly male) acknowledges the fact that a (female) has been attractive and he just never noticed or was blind to this fact for other reasons, leading him to apologize using the infamous inside joke.

1. Shaq: Christian Wood I wan't to apologize, I wasn't familiar with your game and-
Wood: Aw man, you're a casual!

2. Dude: Gyatt, Sandra that booty phaaat. You been hitting the Gym lately?
Sandra: What? My booty been fat ever since, where have you been?

Dude: Oh okay, I see you now though. I owe you an apology. I was not familiar with your game.

I owe you an apology. I was not familiar with your game by Dschezi December 21, 2022

Familiar 

A witches' animal counterpart. Pets who serve as a spiritual guide or assistant to witches or wiccans. Also similar to a totem.

I meditated with my familiar.

Familiar by pagangirl October 16, 2005

Facebook Familiar 

Someone you see at a bar or a club who looks really familiar but you can't quite remember how you know them or where from. As the night progresses you realize you may be friends with them on facebook or have just seen them in pictures on facebook because you are that creepy person who looks at everyone's photos and profiles.

"Dude that girl looks really familiar but I can't remember where I know her from."

"Are you sure?"

"Yeah, shes probably just Facebook Familiar"

Facebook Familiar by The Real Reid Durost May 15, 2008