Dirty Jamaica 

Puking on someone's genitals because he pushes your head down while you're giving him oral.
It tends to happen when drunk chicks with weak gag reflexes are man handled by guys who don't understand head etiquette.

"Oh man, he wouldn't stop pushing my face down so it was Dirty Jamaica all over again."

Dirty Jamaica by MadMadamMim February 27, 2009

Dirty Jamaica 

When you low weed smoke into a girl's rear end and she farts it back into your lungs with massive force

I wanted a good jenkim high, so i performed the Dirty Jamaica with my grandfater's white-haired bottom cavity

Dirty Jamaica by Paco Vazquez September 23, 2012

Jamaican Dirt Sandwich 

Made popular by Dean Blundell on The Dean Blundell Show

on 102.1 the Edge, in Toronto.

"It's when you get high with your girl, and your in a park somewhere doin' it, and there's dirt on the ground, and your down there, doin' (pussy licking noises) the thing, and you get a little dirt in there, IT'S THE JAMAICAN DIRT SANDWICH"

"Nah, the Jamaican Dirt Sandwich is bad because the grounds dirty right? And once you get a little dirt, it's not good."

"If I'm ever eating the Jamaican Dirt Sandwich in front of you, guaranteed one thing is for sure: We will both be VERY VERY DRUNK, and I wouldn't remember it"

Jamaican Dirt Sandwich by Scotty900 August 5, 2009