1. [20C+] the buttocks; occas. in sing.
2. [1950s+] a woman’s breasts.
3. [1980s+] fig. one’s body.
[1960s] (US gay) one who performs the active role in anal intercourse.
[1950s+] a homosexual.
[1960s] (US gay) a male prostitute specializing in taking a passive role.
[2000s] (US prison) an anal search.
see bet one’s (sweet) ass under bet v.
[1900s] (Aus.) head-over-heels.
[1980s+] (Aus. prison) homosexual gang rape.
[1970s+] (US gay) to engage in vigorous sex.
see bust one’s ass under bust v.1
[1970s] (US prison) a prison homosexual .
[1970s+] (US gay) to have anal intercourse.
[1970s] (US gay) to walk in an exaggerated way, intended to focus attention on one’s tight buttocks.
[late 17C+] a general excl. of disdain, dismissal, arrogant contempt.