[Dottore]

Courtesy of Jay Leno:

This woman's dying of cancer and she says to her husband, "Look we've
been together 30 years, but you've never gone down on me. I've always
wanted to know what that would be like".

He says, "OK I'll do it." So he does and she feels better, and he
does it the next day, and the next and so on. Finally, after six
weeks she's fully recovered, her hair's grown back. So she comes back
from the hospital, she's all excited, but the husband's sitting on
the couch crying.

His wife goes, "Honey, why are you crying? I'm in full remission."

He says, "I know, but just think— I could have saved mum."