Have you ever seen a plastic tree?  I haven't, and have always wondered why people say this.  My wonderful wife and I were shopping the other day and only bought one thing.  The clerk was in the middle of putting the item in a plastic bag when we told her we didn't need one.  To which she replied "saving a plastic tree huh?"

We walked away a little surprised, and I really didn't know whether she was being insulting or trying to make a bad joke.  It's not like I'm some super green person that refuses to use plastic bags.  I figured we didn't need one for our single item.

Is there something people say to you that drives you slightly bonkers?