Painting my grandma's face with makeup. I thought she didn't realize I was painting her like a clown with a red nose and all, and I thought it was hilarious. Was always mildly disappointed whenever she took the makeup off before leaving, but I never lost the hope one day she wouldn't notice and would walk out with it.
Ah fun times.
I understand your sentiment but if my biology memory from uni is correct, one of the rules scientists use and not often mention is that you can't breed with specimens that are now extinct. In other words because you can't prove the outcome of a hypothetical hybrid there is enough room for doubt and calling it a species is correct.
Or maybe I'm arse pulling this one off. If someone can confirm/deny that'd be great.