how's-your-father
noun
1
any act of sexual intimacy from petting to intercourse; non-conventional sexual behaviour. Originally from the music halls, 'how's your father' or 'howsyerfather' was an all-purpose catchphrase, a euphemism for anything; subsequent usage, especially in the services during World War 2 mainly narrowed the sense to 'a sexual dalliance' UK, 1931.
2
any activity or business that is complicated or annoying, a fuss. Rhyming slang for 'palaver' UK, 1998.
3
a fight NEW ZEALAND, 2002.
4
cocaine UK, 2000