What is always in front of you but can’t be seen?

What runs around the whole yard without moving?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

Which English verb becomes past tense just by rearranging the letters?

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

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

How can you leave a room with two legs and return with six legs?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?