What can you serve, but never eat?

By using 'because' continuously three times, can you make an English statement ?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

How many Watermelons are there in the below picture?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

I am an odd number. Take away a letter and I become even. What number am I?

What came first, the chicken or the egg?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?