Questions needing answers

When I leave my hot cup of coffee on my desk it gets cold.  When I leave my cold soda on my desk it gets warm.  Why?

When milk spoils, it turns sour.  What happens to sour cream when it spoils?

Fresh bread, when it gets stale, gets hard.  Fresh cookies, when they get stale, get soft.  Why

Why do croutons come in airtight packages? They're just stale bread to begin with.

Why do I park on my driveway, and drive on the parkway?

In the winter, I feel warm on a 50 degree day.  In the summer, I feel cold on a 50 degree day.  Why?

Why are shoe sizes not measured in "feet"?

If all clocks were digital, how would we describe "clockwise"?

How can a right turn be wrong?  How can a left turn be right?

Why is "right in front" not the exact opposite of "left behind"?

Why do they sterilize needles for lethal injections?

Why will a person get in a car and drive to a health club so that he can walk or run on a treadmill?