(General talk about) jokes and humour

[Mervi]

But some knock, knock jokes probably DO have a an actual 'joke' to them, and that IS often (always?) a play on words of some sort. So it's possibly a language barrier? It's hard for me to even remember English isn't your native language when you are perfectly fluent in it, but I suppose there ARE some weird little sayings and nuances in English. Especially the Australian version! (or so I am told)

Err I'm really not! I'm just relatively good at not using words and phrases I don't know!

But I just saw a knock-knock joke I thought I understood. It went
- knock knock
- who's there?
- you know
- you know, who?
- yes! AVADA KEDAVRA!

It's just that I think it would have worked better like this
- knock knock
- who's there?
- You Know Who
- YOU SHALL NOT PASS!