1 definition by John Bigbooty
In a situation where men are living in confined quarters and are hard up for sex, another man may offer himself up as a sexual partner or "sister" in exchange for other favors. Alternatively, the man's anus may be referred to as "his sister" in such a situation. Although their actions may be homosexual, the men involved may not actually consider themselves gay.
Joker: "I wanna slip my tube steak into your sister. What'll you take in trade."
Cowboy: "What do you got?"
Cowboy: "What do you got?"
by John Bigbooty February 16, 2014