It's quite simple. Really!
When Nat and I first got married, we packed for our honeymoon separately (insert a big "obviously" here!). That meant our toiletries were separate... right down to that little tube of Colgate (or Crest... we're not picky). When we returned to our apartment, we continued the trend we started on the honeymoon: using our own toiletries. Including that little tube of Colgate (or Crest... like I said, we're not picky!).
Never once have we had a dispute over the tube being squeezed in the wrong place because we each have our own. I don't care how he squeezes his toothpaste tube and he doesn't care how I squeeze mine. Rocket science is taking place here at our little apartment:). And thanks to Pastor's message, we're reminded about a little piece of contention that we are missing out on... gladly!