Maybe he's your favorite superhero. Maybe you watched all the movies. Maybe you read most of the comics. Maybe you always thought you could relate to Peter Parker. Maybe you tried getting bit by a spider before. Even if you did all that, you still may not know that Spider-Man was Sheep-Boy or may have forgotten that Spider-Man's radioactive semen is cancer causing. Here are 10 facts about your friendly neighborhood Spider-Man from AllTime10s.