John is the son of Jacob.
So,
Jacob is the_____of John's father?

What can go through glass without breaking it?

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Can you solve the rebus below?

What is the below Rebus indicate?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?