Answer:
Flat as a leaf, round as a ring. Has two eyes, can't see a thing.
Kills the bad ones and the sad ones. Tightens to fit, so one size fits.
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
What is lengthened by being cut at both ends?
It is an arctic double breasted formal wear.
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.