Los Angeles - Jane Goldman insists Kick-Ass was never meant to shock.
The screenwriter claims the movie - which featured Chloe Moretz as a foul-mouthed 11-year-old assassin - was designed to be humorous and entertaining, and says she was surprised by the outcry that followed the film's release.
She said: "We didn't set out to shock, we just wanted to tell a good story.
Huge fan base
"I was a little bit amazed that the Americans were more offended by the C-word than by the fact Hit-Girl was cutting people's legs off."
Jane has recently re-teamed with director Matthew Vaughn to work on X-Men: First Class and she admits she felt pressure to do well on the movie because the original comic books have such a huge fan base.
She said: "As a comic fan, I feel a constant sense of responsibility and slight panic every time someone goes, 'Can we just make it slightly different?'"
However, she felt much more relaxed making Kick-Ass because there were no major studios to answer to.
She said: "Because it was a completely independent production, it was like having no grown-ups around telling you what to do. That was particularly fun."