That is why I look like I do

 A woman walked up to a little old man rocking in a chair on his porch.

“I couldn’t help noticing how happy you look,” she said.

“What’s your secret for a long happy life?”

“I smoke three packs of cigarettes a day,” he said.

“I also drink a case of whiskey a week, eat fatty foods, and never exercise.”

“That’s amazing,” the woman said. “How old are you?”

“Thirty-six!” he said.