This is 40

DISCLAIMER: Dr. Chris Yandle is not one of those cool social media influencers and does not have sponsorship deals with Post-It® and Sharpie®…yet.
So, if someone from Post-It® and Sharpie® scrolls down this far and wants to partner with a 40-something dad who wears sweater vests, has nice handwriting, and writes notes to his kids, then you found the right guy.