In my dad's shadow

Recently, my kids informed me of the following:

Kids: Daddy, you're not as tall as Grandpa. He's taller than you.

Me: Yes, he is.

Kids: He's older, too.

Me: Yep.

Kids: He's stronger than you, too.

Me: Yeah, I'll agree with that.

Kids: And he's smarter than you. I bet he knows how fast hyenas can run.

Me, with evil grin: Why don't you ask him tomorrow when he comes for dinner?

Of course, I couldn't let my dad let my kids down. So I called him and said, "Before you come tomorrow, you need to research hyenas and how fast they run."