Death - is it avoidable?

(I know - I've done this before. A few times. But hey. Always worth another visit.)

Geoffrey and I were sitting by the fire discussing the ways of the world, while the rain battered the tiny windows of the Outcrop.
"Another madeira, Tuppy?" asked Geoffrey, rising to his feet.
"Why not," I replied, proffering my mug. "Another pint or two should keep out the chill on this fine July morning. And fire on the lorne - I'm gasping on my breakfast."
"Are you sure that's wise?" asked Geoffrey, raising a quizzical eyebrow. "After all..."
"Not you as well!" I spluttered. This was too much.
"Well, diet and exercise, Tuppy. Very important if you want to keep your health."
"You've been brainwashed, Geoffrey. You've gone over to the dark side. I thought you had more fortitude. Well, let me tell you this. If the Grim Reaper wants to meet up with me, mano a mano, for a square go anytime - bring it on."
"Square sausage more like."
"Are you implying that I couldn't take on Death?"
"Yes. I'm not being rude or anything, Tuppy, but you couldn't blow the skin off a rice pudding in your current condition."
"Alright. If you want to be like that, fair dos. All I'll say is this - bring me that rice pudding, and watch me blow its skin off. Just watch me do it. And now I'm going in a massive huff."