What do you get when you cross a rhino with an elephant? Hell-if-i-know (my grandma's favorite joke)

My grandpa dropped this one on me over the phone. I'll see you in church, make sure you sit by the window.

It's Palm Sunday and we didn't drink the wine out of a coconut? I don't know why this church even has a suggestion box.

It doesn't matter if I go to church or the gym as long as I can act superior later, right?