Posthumorous

Posthumourous, alt. American English spelling posthumorous : adjective. Describing something which becomes funny with the death of the originator, or describing something funny, which is only found or understood after the death of the originator. For example, the book titled 'The Complete Book of Running', which emphasised the health benefits of jogging, was only imbued with a sense of irony after the author Jim Fixx died of a heart attack at the age of 52, while jogging.