Kick-Ass is an irreverent pulp-style movie you’ll either get extremely offended by or like… a lot. It’s in-your-face, non-pc, and ultra-violent. So basically, if that’s not your bag, stay well clear. The film was independently produced by Matthew Vaughn alongside Mark Millar’s creator-owned comic book, so there is bags of creator input and cross-over with zero interference or censorship.
Unfortunately in some countries Kick-Ass was rated PG-13 and promoted in trailers as a light-hearted teen flick. This is outrageously misleading and I don’t know who in their right minds would classify it as anything less than an 18. We’re talking graphic violence and something like 250 hardcore profanities. It’s adult content; kids should not see it. Period.