Frog noise

Two litte boys are talking to each other when the older boy, Little Tommy, gets up and walks over to his Grandpa and says, "Grandpa, please make a frog noise."

The Grandpa says, "No."

Little Tommy goes on, "Please .. please .. make a frog noise."

The Grandpa says, "No, now go play."

Little Tommy then says to his younger brother, Little Johnny, "Go tell Grandpa to make a frog noise."

So Little Johnny goes to his Grandpa and says, "Please make a frog noise."

The Grandpa says sternly, "I just told your brother NO and I'm telling you NO."

Little Johnny says, "Please .. please .. Grandpa make a frog noise."

The Grandpa curiously asks, "Why do you want me to make a frog noise?"

Then, Little Johnny replied, "Because mommy said when you croak we can go to Disney World!"