What is the riddle which can be asked all day with a different correct answer each time.

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Can you divide the below-given shape into four equal and identical pieces?

Which city is three-fifths chick two third cat and 50% goat?

Can it be possible to build a house that has all its four walls facing towards the South?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?