Why do we preferably have round manhole covers and not square ones?

What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
COME SERVED
COME SERVED
COME SERVED

John was drowned by he was not wet. How?

What's the best place to go shopping in the ocean?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

What has lots of eyes, but can’t see?

How far can you walk into the woods?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

How many times do a clock's hands overlap in a day ?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?