My husband and I were discussing the meaning of the term "tool" as in "you're being a real tool".  I wonder how many people say stuff like that without knowing what the original meaning of the term is.  Have you ever said something and then wondered what it was truly supposed to mean?

We use all sorts of abbreviations all the time too.  I wonder how many people know what RSVP means (probably only those who know French).  Everyone uses it and knows that it is asking for a response but what do the letters stand for? (that's rhetorical since I know the answer).  I bet most don't even spare a thought on the matter.  It's just accepted.

I recently started getting email from a cousin who signs off LOL.  She means Lots of Love.  I automatically think Laugh out Loud which makes no sense in her context.