It Runs in the Family

I have made a recent discovery while looking through some photos of Todd's family... I have scanned the relevant photos, and invite you to take a look and see if you can spot the particular trait Todd and his children have in common.

Item 1: Todd himself


Item 2: First child


Item 3: Second child


I thought at first it was a weird coincidence, but now that Caitlyn is exhibiting the same trait, I know it's a genetic thing. These Inkpens are saucy!! Maybe I'll do more research, and see if any of the other Inkpens suffer from this genetic anomoly. I may even be able to track it's origins...