Glenn, I can relate to your mother since I accidentally ingested pot brownies in college. Maybe the pharmaceutical logo on the container should have been a clue.. I also witnessed my dad grab his spit bottle by accident while driving down the road. Oh, man, it was funny scene except the part where we could have wreck the truck and the boat in the ditch. hah.
Also, we had deer meat in our fridge and my mawmaw, who claimed to LOVE country food only, would never eat deer meat. So, one time my dad and I made meat loaf using the deer meat and told my mom and mawmaw we used mostly beef. My mom and mawmaw said they loved it and had no idea it was deer meat.... *whistling*