Who cares? You know exactly what people mean when they say things. You pointing out the flaw in the phrase and/or taking it literally just makes you sound pretentious.
Your getting all fizzed up numerous times over this thread makes you hilarious...
While I'm at it, it's not a phrase, but annoys me in written word when people use the wrong homophone, like it's/its, your/you're, there/they're/their. I'll give a half pass for its/it's since that one's a little odd at times. The result of having an absolutely militant english teacher in HS, I guess.