Green’s Dictionary of Slang

naughty v.

[naughty n. (2)]

to have sexual intercourse.

[Aus]‘She’s Up the Flue’ in Mess Songs & Rhymes of the RAAF 33: I naughtied her twice, by Christ it was nice.
[NZ]G. Slatter Pagan Game (1969) 219: The Thomas girl says he tried to naughty her.