On a cold snowy morning, two bums were walking along the railroad track when they stumbled upon a rotten dead dog:

"Hungry yet?", asked Red.

"Nah, you go ahead. I'm waiting for a decent hot meal.", said Green.

So Red carved off a hind-quarter of dog-meat and gnawed away while on their journey for a decent hot meal.

About an hour later, Red began holding his stomach and proceeded to "let go" right in front of Green.

"Hell yeah!", said Green grabbing for his spoon, "Finally!!! A hot meal with some brown gravy on the side!"