Green’s Dictionary of Slang

judy n.1

[Punch’s wife Judy in the puppet-show ‘Punch and Judy’; 20C+ use mainly in Liverpool dial. + Aus.]

1. [19C+] (orig. UK Und.) a generic term for a woman.

2. [19C+] (orig. UK Und.) a promiscuous woman or prostitute.

3. [mid-19C+] (orig. UK Und.) a girlfriend, or wife.

4. [20C+] a ludicrous-looking woman.

5. [1960s] (Aus.) a feminine lesbian.

6. [1980s+] (US campus) a fat woman.

In compounds

judy-slayer (n.) [play on SE lady-killer]

[late 19C–1900s] a successful ladies’ man.

In phrases

crack a judy’s teacup (v.)

[early 19C+] to deflower a woman.

flop a judy (v.)

[late 19C] to lay a woman down preparatory to intercourse.

judy with the big booty (n.) [booty n.2 (2)]

[1970s+] (US black) a fat woman.

stalk a judy (v.)

[late 19C+] to follow a woman in the hope of sex.

tap a judy (v.) [tap v.2 (1a) + sense 1 above, i.e. pun on to deflower]

[mid–late 19C] to cause someone’s nose to bleed with a blow.