Cat in the bag 

A term used to tell others that he/she is going to get laid without directly telling them you’re going to get fire pussy

Person 1: Yo, I’m definitely gettin the cat in the bag tonight with Samantha.

Person 2: Awe shit man I heard that puss fire asf.

Cat in the bag by Thankyoub August 7, 2018

putting the cat in the bag 

V. The act of agreeing to keep a secret.

Day 1, person 1--" Hey, don't tell anyone about that secret thing that i told you confidentially, in private while we were in the elevator by ourselves and no one else was there, ok?"

Day 1, person 2--"I'm putting the cat in the bag!"

D1,P1--" I'm serious! "

D1,P2-- "Doood, cat's in the bag!"
*************************************
Day 3, Person 1--- "Who let the cat out of the bag??"

putting the cat in the bag by Col. Dante KnuckleBuckle March 10, 2010

Schrödinger's Cat's in the Bag 

Referring to a secret/rumor you're not sure has gotten around

Person X: Has the secret/rumour gotten around yet?
Person Y: Dunno, Schrödinger's Cat's in the bag
Person X/Y once rumour has gotten around: Guess Schrödinger's Cat is out the bag now

Schrödinger's Cat's in the Bag by The Daft Knee February 7, 2022