John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I am sure no one can have two things for dinner. what are they?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

Why do people go to bed?

Why is Saturday stronger than Monday?

What does the below mathematical rebus mean?

What country can make you shiver?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

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.

When can we add 2 to 11 and get 1 as the correct answer?