Celebrate Curiosity on Ask a Stupid Question Day

Have a question you want to ask but think it might be stupid? It's your day to let loose.

According to Wikipedia, Ask a Stupid Question Day was pioneered by U.S. teachers in the 1980s to encourage students to ask more questions in the classroom.

Though Ask a Stupid Question Day's default date is Sept. 28, it is typically observed on the last school day in September— a win-win in 2012.

So...

Whose cruel idea was it for the word 'lisp' to have an 's' in it?

How does a thermos know whether a drink should be hot or cold?

How do you throw away a garbage can?

Who was the first person to see an egg come from a chicken's butt and think, "I'll bet that would be good to eat?

Who opened that first 'oyster' and said "My, my, my. Now doesn't 'this' look yummy!"

When they first invented the clock, how did they know what time it was to set it to?

Why isn't phonetic spelled the way it sounds?

Why don't they call mustaches "mouthbrows?"

Whatever your question, fire away in the comments. Maybe someone else knows the answer. Or always wanted to know the same thing.