Grampa’s Frog Imitation

A little girl says, "Grampa, can I sit on your lap?
"Why sure you can," her grandfather replied. As she is sitting on grand dad’s lap she says,
"Grampa, can you make a sound like a frog?"
"A sound like a frog? Well, sure Grampa can make a sound like a frog."
The girl says, "Grampa, will you please please MAKE a sound like a frog?"
Perplexed, her grand dad says, "Sweet heart, why do you want me to make a sound like a frog?"
And the little girl says, "’Cause Daddy said that when you croak, we’re going to Disneyland!"