My true story: As my kids were growing up, I would do everything possible to not react when being tickled. I then "confessed" that I had been born without "The Tickle Gene". I convinced them that it was impossible for me to feel tickles. I started revealing this feigned disability when my son was about five years old. I was able to keep them believing until he turned fourteen. Saved me a lot of discomfort. Of course, I finally had to fess up. My son has been paying back, since then. Big time.