Make A Sound Like A Frog

A little boy said, “Grandpa, can I sit on your lap?
“Why sure you can,” his grandfather replied.
As he sat on his grandfather’s lap he said, “Grandpa, can you make a sound like a frog?”
“A sound like a frog? Well, sure Grandpa can make a sound like a frog.”
The boy said, “Grandpa, will you please, please make a sound like a frog?”
Perplexed, his grandfather said, “Sweetheart, why do you want me to make a sound like a frog?”
And the little boy said, “Because Grandma said that when you croak, we’re going to Florida!”