I work with a guy who's been doing a really weird thing lately.  He calls a lot of people during the day and leaves a lot of messages.  At the end of his messages, he says something like, "Call me back when you get a chance.  Thanks.  Bye."  When written out, this is normal.  But the way he says it is really weird:  His inflection on "bye" goes down to up, instead of up to down.  Try it.  It's totally unnatural. #language