I'll refrain from joking about the size of the Grand Canyon.
“If we could find the keys to my pickup truck....”
;^)
Does that joke go like this?
This guy is looking in, and says "Wow, you have a huge ****y! Wow, you have a huge ****y!".
The woman says "Well, you don't have to repeat yourself."
The man says "I didn't.".