Tim McGraw [1] and Faith Hill [2] have been married for 20 years [3], so it goes without saying that they know each other pretty well. Apparently Ellen DeGeneres [4] still needed to be convinced and challenged the longtime couple [5] to play a round of Never Have I Ever [6] during her show on Friday. In addition to learning that Faith and Tim regularly use each others' toothbrushes and never send nude selfies, Ellen ends up asking them a question that leaves them in total hysterics. We'll give you one clue: it has to do with wax. Watch it above!