Memistress 

A lady, who you sharing memes with, particularly ones that you can't share with your wife. Not to be confused with memestress, although it's usually overlaps.

- Bro, you have convo with that girl for hours, are you having an affair?

- Nah, man, she just have really dark sense of humor. She is just my memistress.

Memistress by innocent_0ne November 14, 2021

Elvira, Mistress of the Dark 

That's the name of the comedy/horror movie that she's in. She's Very Sexy & wears an Extremely revealing long black dress & is Gorgeous! She's a great actress & icon.

Some of her friends think she looks like Elvira, Mistress of the Dark!

Elvira, Mistress of the Dark by Starchylde June 8, 2016

five finger mistress 

Simply the hand you use to masturbate.

If your girlfriend doesn't do it for you your five finger mistress will.

five finger mistress by VitoVane November 12, 2017

Sinistrous Mistress 

A sexy, left-handed woman. Also known as a sinister sister.

She's left-handed and a little bit sinister. She's a sinistrous mistress.

Sinistrous Mistress by yo-yo-ma-ma March 22, 2011

professional mistress 

An upscale prostitue who services a small number of men (usually executives) on a regular, long-term basis in exchange for them contributing to her financial well being. Each man may call on her anytime on his regular day (eg. 1st & 3rd Tuesdays). If he needs her for a Friday,Saturday or other days, additional negotiations are necessary.

I could never be a protitute - having to hustle for johns and taking risks, but being a professional mistress is great because I am in control of who I see and when, and the guys I pick really take good care of me.

professional mistress by myplayfulvixen October 25, 2007

Dairy mistress

When dating a vegan, you're likely to not eat animal products when eating dinner with them. However, you likely eat animal products when at dinner with a friend(s) who is not vegan, and this friend(s) is/are your dairy mistress(es).

If your partner is vegetarian, the friend(s) would be a meat mistress(es).

Bob: Dude, I totally couldn't eat this grilled cheese if Susan was here; she became a vegan 6 months before we started dating. You're so my dairy mistress.

Dairy mistress by TwistedColorArrangement September 13, 2012

Nemistress 

This word is a portmanteau combining the words Enemy and Mistress. A failed attempt with a girl you are trying to date and must avoid at all cost due to awkwardness and humiliation.

Gail is now Jake's nemistress.

Nemistress by Brentheren September 30, 2014