20 Mind-Blowing Facts You Never Knew About Marvel

Such as having sex with Spider-Man can give you cancer.

It’s understandable that after more than 75 years of existence, Marvel would be full of easter eggs, trivia and scarcely-known tidbits.

Passing over what's common knowledge and focusing on lesser-known information, these are the 20 most insane facts found in and behind the pages of Marvel comics...