rusty burger
When a ladies anus is hairy with peices of shit in it, and a man penetrates it anyway.
HE DEFINATELY GOT THE OL' RUSTY BURGER LAST NIGHT.
rusty horse burger
One runs there finger around the butthole of a horse collecting all the excess poop then slathering the feces on two buns creating the best culinary masterpiece, then insert your penis in this gooy mess until there's nothing left.
The other night I was with the boys and I had myself a good old fashion rusty horse burger.