A short explanation for those who don't know This Kind of Jokes:

- You start with saying 'Knock knock'

- the other person says 'Who's there?' ( & two first lines are Always the same )

- then you give the answer ( but not complete one - sounding like one word or a name ) like: 

- 'I'm Sick'

the other person asks 'I'm Sick Who?' 

- & you give the full answer like: - 'I'm Sick of My Wattpad Errors & My Comments working Slow!' 

*( I know it wasn't very funny - but True for Me! 😉

- so try to Invent Something Better, please :)

I'll choose the Funniest idea later!  ^_~ )