An old couple are sitting on the porch: "Do you remember when you used to hold my hand?", she asked. He reached over and took her hand. "Do you remember when you used to kiss me ", she asked. He leaned over and gently kissed her cheek. "And do you remember when you used to nibble my ear?". At this the old boy gets up and begins to shuffle back into the house. "Where are you going?", exclaimed the woman. He replied, "To get my teeth"!!