When two people of any gender exchange flatulence by lining up their asses so that their assholes align. They then fart at the same time, exchanging gases.
The Baltimore Broil is different from other defecation terms in that it involves baking the load.
Take a huge smash on a metal cookie tray, and place it in your preheated oven. Broil. It's done when the paint starts peeling off the walls.
I invited my girlfriend over for the first time forgetting the baking that was well underway.
Girlfriend: Oh jesus, what's that horrible smell?
Me: I totally forgot I've got a Baltimore Broil baking away in the oven. It's nearly ready. Would you like some?
I guy and a girl are bangin so hard and fast that the friction created provides enough heat for both partners pubs to light on fire. It is very painfull!
"OH GOD! We were bangin so hard we started a baltimore bush fire!"