Originally Posted by
kochleffel
I'm traveling to someplace sunny next week. How will they determine that my tube of sunscreen isn't really full of toothpaste?
You will be asked to rub some on exposed skin, after which you will be subjected to a sniff test...as long as you aren't minty fresh, you'll be good to go*.
*Unless they've come out with coconut or banana-flavoured toothpaste...