Buttsausage. The term for a gay man's enormous cock, that he puts up other men's butts, forcing them to fart like mad as their rectums strain to handle the girth.
The gay fella saw the young dudein the white jeans and couldn't help but look at his big package. He wondered if he could take all that buttsausage. His crack was still a bit tender from the night before so he thought better of it but what a wonderful idea it had been.
When you see someone with a nice behind (butt) and also a nice cleavage, and you just want to say it fast. You can use it as a compliment and/or say it to your SO.
Whoa! Shawty you have a nice buttivage!!
My girlfriend has such a cool buttivage
Look at my boyfriend, my man has a nice buttivage!!