Three cups of coffee

That's what gets my day started.  Three cups-o-java to kickstart my brain at 5 a.m. (and a piece of peanut butter toast). 

I began a blog yesterday...I was thinking about why certain things were said, or things are called what they are, but didn't publish it.  Like, why for instance, do people say "good gravy"?  I can understand if it is said on Thanksgiving, or while eating mashed potatoes, but other than that, I just don't know why it would be used. 

Well, after I walked into work this morning, bright-eyed and bushy-tailed, as always, Joe asked me why Blue Tooth was indeed called 'Blue Tooth.'  I didn't know.  Why is it called Blue Tooth? 

That, my friends, is today's conundrum.