During sexual intercourse right around the time of peak stimulation for the female partner. The male proceeds to insert a pre-written note inside of her vagina. Later, the female can pull it out and read what her partner has written.
Aaron: Did you finally tell that thot that you loved her?
Bill: Yeah man, I wrote it on a note and hit her with the Baltimore Mailbox!
Bill: Yeah man, I wrote it on a note and hit her with the Baltimore Mailbox!
by Slick silly October 14, 2020

by catch life by the balls December 31, 2015

National Cum in a neighbors mailbox day is beautiful day dedicated to releasing the previous months load all up in your fellow neighbors virgin mailbox.
Hey mom! Im going to celebrate National Cum in a neighbors mailbox day, by splurging in Mrs. Osbornes mailbox ill be back!!!!
by National Neighbor Cum Day April 17, 2021

Don't fuck your coworkers. Don't date your coworkers. And especially don't do any of that with your boss
by jimmyjiggler July 11, 2024

They've been talking for 3 hours and I don't care about anything They've said they are such a mailbox
by Gamemaster6663 January 25, 2023

by FS20Chaos2 November 20, 2023

Person A: Don't hit that crazy lady standing on the side of the road.
Person B: Dude, calm down. Your just mailbox tripping.
Person B: Dude, calm down. Your just mailbox tripping.
by subwayfreshfit September 24, 2010
