A really big one? After paying off the bills and hiring a financial advisor with no power of attorney, I'd take a few million and vanish into Las Vegas or some other modern Sodom/Gamorra and do things that would shame the average person into a bush induced stroke till the pocket money ran out.

Then I'd spend a week or ten recovering in a bungalo on Maui, and finally, maybe I'd do something productive with what's left.

This is assuming a final in-pocket payout of at least 15 million.

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I'm not completely heartless, the doctor who removed it told me he'd never be able to get it all.