It's possible to loose the square manhole cover into the hole where as it's impossible if it's circular.
Timmy is a business man. He works Monday through Friday and gets payed on Saturday. Every Saturday after he gets his check, he buys 2 drinks from Wendy's. Next Saturday Tim ordered pizza instead. Why Is that?
I can be long or short. I can be grown or bought. I can be painted or left bare. My tip can be round or square.
What am I (one word) ?