Open meeting 

When people aren't in a relationship but are willing to engage in sexual activity with each other but also won't be bad if the other person has sexual activity that isn't them. Basically a pass to cheat.

She met Aaron but that's ok because we are open meeting.

Open meeting by Aaron123c April 3, 2017

Open lid 

The opposite of “cap”. To mean the truth.

Guy 1: Bro youre more sus than me
Guy 2: That’s a cap

Guy 1: Nah, that’s an open lid.

Open lid by BigPang December 5, 2019

open thong 

A tiny, crotchless thong which frames pussy in a window between thin bands of lacy material. Some types have a fine thread of pearls running from the top of the 'window' between the girl's pussylips. This thread connects to the waist band at the base of the spine. Another type has a feather attached to stimulate the clitoris. Open thongs are often decorated with semi-precious jewels, pearls, diamante, lace or sequins.

Her idea of heaven was to be knickerless, to strut her stuff wearing just an open thong under her tight red miniskirt. It was a sure-fire way of getting cocks and sperm.

open thong by O'Flagherty January 6, 2008

Open Door Beauty 

dropping a deuce with the door open

"Fenny's open door beauty gave me a scare with its pungent aroma"

Open Door Beauty by 93DIVISION January 16, 2009

open bar

1) a bar where the drinks are free
2) something that troy does not have at his wedding

1) man, I'm drunk. Thank you open bar
2) man, I'm sober. Wish there was an open bar

open bar by Matt Hemlepp February 2, 2003

open book 

it means you are an easy person to know.
like reading an open book, you can read what the person is thinking or feeling.

Jenny: I like you Forest. Do you like me?
Forest: Well, I...
Jenny: You don't have to say it, you're an open book.

open book by shinviroz February 5, 2009

open tom 

When u don’t know the words to 8 mile rap battle

NICK: my boy future is an open tom

open tom by B NEGRO May 11, 2019