Green’s Dictionary of Slang

dirty n.

1. [1950s] (US) constr. with the, sexual adventuring.

2. [2000s] a term of contempt aimed at a female, the inference is of a missing n., e.g. dirty whore, dirty slut, etc.

SE in slang uses

In phrases

do one’s dirty (v.)

[1970s] (US) to defecate.

do someone the dirty (v.) (also do the dirt on someone, do the dirty on someone)

[1910s+] to cheat, to betray, to inform against, to treat harshly.

do the dirties (v.) (also do the dirt, do (the) dirty, do the dirty deed, do the dirty thing) [note synon. Shakespearian do the deed of darkness]

[1960s+] (orig. US teen/campus) to have sexual intercourse; Current Slang (1970) suggests ‘applies only to girls’.

do (the) dirty (v.)

1. [1990s+] (US) to commit a crime; to murder.

2. [2000s] to vomit.

ring a dirty (v.)

[1940s] (S.Afr. prison) to make a false charge.