John and his wife were living in a rural place. On a particular day, John's wife fell ill and he called the local doctor. When the doctor picked up, he said, "Doctor, my wife is ill. She might have appendicitis."

"This can't be possible! I took out her appendix two years ago myself," the doctor explained.

When diagnosed, John's wife was found to have appendicitis. How can this be possible?

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.

What does below Rebus mean ?

esgg sgeg gegs gsge

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?