Upon reflection, my snake oil experience provoked some further thought. The younger (and dumber) me would have wanted to take the husband/wife duo to the mat for the false claims of the supplements they were peddling. The older me recognized that compassion was so much more appropriate. I remember one time my son came home and told me about the countermeasures he and the neighbors were taking to keep the squirrels from eating the seed in the bird feeders. I said, "Don't be too hard on the squirrels. They gotta make a living, too".
At one point the husband was in the middle of saying something when his wife inadvertently started the promo video. He shot a fierce look at her. I wondered if that would be the source of a quarrel later that evening. It made me feel compassion for them. All of us have our struggles in this world. As Billy Crystal says, "Nobody makes it out of here alive".
It also gave me an opportunity to practice what I call Water Technique. Ever try to have a fight with water? You can't. It yields in every direction... and tires out the attacker. The dynamic duo was looking for an entry... a weakness. They couldn't use weight loss, so they tried recovery. "You must get sore working out 6 days a week". I spoke in my laid-back surfer drawl. "Nah... not really. I used to, but now I'm pretty much used to it [dude]". Next, they tried the competitive angle. "You'd probably like a boost in those Crossfit competitions, huh?". Surfer guy - "Nah, I'm not really into the competitive stuff".
Water. Eventually they tired and gave up. I thanked them and said good night. I didn't have the experience I was hoping for, but I got to practice kindness and patience. There is always a positive.