Six pack

"Wow. You have been working out haven't you?"

"Why thank you. You noticed."

"So are you aiming for a six-pack and all?"

"Actually I already have one."

"No, really?"

"I was lying down last night and I pulled up my shirt and there it was."

"Oooh... Can I see it?"

"Actually, its only visible when I'm on my back. The fat sort of rolls down to the side and then you can see it. You can't fully appreciate it otherwise. But believe me its there."