A line in the United States between the North and the South where Yankees go to take a shit and Confederates go to eat.
Rebels head north to the Mason-Dixon line for dinner, while the Damyankees slide south to take a crap.
by Bigyank January 11, 2012

what one does when it's fucking hot!
by eddie23 August 6, 2003

by GirlAgainstFeminisn January 22, 2016

A disease common to people born below the Mason-Dixon line, which restricts each individual's IQ to less than the number of teeth they have. Also referred to as MDLS
So I was watching COPS, and they pulled over a guy with a joint behind his ear. He had a major case of Mason-Dixon Line Syndrome.
by Dr Shea Foster, DDR December 22, 2008

by Lil Griz July 31, 2020

Usually not tough, but she is always there when you need her, if she dumps you, don’t go after her, she will go and get you back.
by 223spractice February 13, 2021

by treggsy November 28, 2020
