Green’s Dictionary of Slang

nut n.3

[ext. use of nuts n.2 (1)]

1. [1930s+] (orig. US) an orgasm.

2. [1970s] (orig. US) the vagina.

3. [1980s+] (orig. US) in fig. and non-sexual use, a sense of pleasure.

4. [1990s+] (orig. US) sexual intercourse.

5. [1990s+] (US) semen.

In compounds

nut-busting (adj.) [backform. f. bust a nut ]

[2010s] overwhelming.

In phrases

bust a nut (v.) (also’s nut) [1930s+] (orig. US)

1. to reach orgasm; thus nut-busting, reaching orgasm.

2. (also bust one’s nuts) to work hard, to strain oneself (cf. break one’s balls under balls n.).

3. to have sexual intercourse.

get a nut (v.) (also get off the nut, get nut, get one’s nuts)

1. [1950s+] to have an orgasm, to have sex (cf. get one’s nuts off under nuts n.2 ).

2. [1970s] in fig. use, to experience a catharsis.

pop a nut (v.) [1950s+]

1. (also pop one’s nut) to reach orgasm; thus by ext. to feel happy, satisfied (cf. pop one’s nuts under nuts n.2 ).

2. (also pop someone’s nut) to bring someone to orgasm.