Suprise, suprise

Joke: Gomer Pyle and Betty Lou,... are out on a date at the County Fair. They are walking side by side when Gomer asks, Betty Lou can I hold your hand? And she says, I don't know Gomer. And he says, Oh come on Betty Lou and she says, Well, OK Gomer. And they walked holding hands. As the night went on Gomer asks, Betty Lou can I kiss you? And she says, I don't know Gomer. And he says, Oh come on Betty Lou and she says, Well, OK Gomer. And they kissed. Gomer drove her home and they kissed a little more. Gomer asks, Betty Lou can I put my finger in your belly button? And she says, I don't know Gomer. And he says, Oh come on Betty Lou and she says, Well, OK Gomer. Pretty soon Betty Lou yells out, GOMER THAT'S NOT MY BELLY BUTTON and he says, Well surprise,  surprise, that's not my finger either!