On June 23th you have permission to fuck any of your best friends weather they be male, female, non binary, trans female or trans male, ECT.
You can go up to your best friends and say "its national fuck your best friend day" and they have to let you smash and the same goes to you.
by Femmeep420 June 21, 2021

by Da real Lightning McQueen November 5, 2019

Olli: Oh shit its November the 13th. National Fuck Your Italian Girl Day. Gotta smash my italian girl.
by IHateIndianPpl223 November 12, 2019

Abby: omg did you really fuck him?
Larisa: yea duh it's National fuck your math teacher day why wouldn't I?
Larisa: yea duh it's National fuck your math teacher day why wouldn't I?
by Have a great day 😌 November 15, 2020

by Jenrndudje November 15, 2021

Abby: omg did you actually fuck our math teacher?
Larisa : uh yea? Why wouldn't I? It's National fuck your math teacher day today!
Larisa : uh yea? Why wouldn't I? It's National fuck your math teacher day today!
by Have a great day 😌 November 15, 2020

Refers to a situation upon which there is a statistically binary outcome in the opportunity to have sex with an attractive married woman.
Person A - How do I know if there's a fifty percent chance I fuck your wife?
Person B - It's cool with me as long as it's cool with her and I'm allowed to watch!
Person B - It's cool with me as long as it's cool with her and I'm allowed to watch!
by iMonkeyBIZ February 9, 2020
