Green’s Dictionary of Slang

slice n.

1. in sexual senses the equation of women with food, reinforced in sense 1b by pvb ‘a slice off a cut loaf is never missed’.

(a) [mid-18C+] the vagina.

(b) [1960s+] a generic for women, in the context of sexual intercourse.

(c) [1980s] an attractive woman.

2. [1940s–70s] (Aus.) a £1 note; since decimalization, A$2 [? a single ‘slice’ of a wad of notes].

3. [1980s+] (US campus) a friend, an intimate [abbr. home slice under home n.].

In compounds

slicetown (n.)

[1950s+] (US) a ‘red-light’ area.

In phrases

carve a slice (v.) (also get a slice)

1. [late 18C; 20C+] to have sexual intercourse.

2. [2000s] to take a portion of the profits.

cut (oneself) a slice (v.) (also have..., knock..., take..., cut a lump off..., give someone a slice off the loaf)

[late 18C+] of a man, to have sexual intercourse, esp. with a married woman, since proverbially ‘a slice off a cut loaf is never missed’.

slice off the legs (n.)

[1960s+] (Irish) an act of sexual intercourse.

slice of life (n.) (also spice of life)

[20C+] the vagina.

take a slice from a cut cake (v.)

[1960s] (Aus.) to commit adultery.