Ideally, I would tie you down and eat your cock and balls as you squirmed and thrashed and screamed in pain. The cock is tough and teeth are not that sharp, so it would take a long time. But eventually, your dick would be in shreds. Your balls, once I got through the sac, would yield more easily. But I am a patient man. Even if it took hours, even if you passed out with pain, I would continue to gnaw and chew and grind until your cock and balls disappeared down my throat. I'd be nourished by your blood and, in time, there would be nothing left to your crotch except a mass of raw and bloodied tissue. which I would lick and suck on.
There are many ways to disappear your beautiful penis and testicles. This is just one. I have many other sadistic thoughts.