"The world I lived in, heroes only existed in comic books, and I guess that would have been okay -- if bad guys were make-believe, too... but they're not."
Kick-Ass (2010)
Dave Lizewski is an unnoticed high school student and comic book fan with a few friends and who lives alone with his father. His life is not very difficult and his personal trials not that overwhelming; however, one day he makes the simple decision to become a super-hero, even though he has no powers or training. (Synopsis via IMDB)