Mistakes
The paramedics apply the neck collar to Kick Ass after he was hit by the car. The problem is he is already on the spinal board when it is applied. Neck collars are always applied before putting the patient on the spinal board, especially when head or neck injuries are suspected as would be the case in being struck by a car. Even if there were no witnesses to him being hit, paramedics would assume a neck/head injury if no one saw the incident. Also, the paramedic doesn't immobilize his head before applying the collar, and is far too rough in putting it on. See more...
Trivia
When Kick-ass follows Hit-girl up to the roof after killing everyone in Razul's apartment, you can see Big Daddy standing in front of a billboard promoting model Claudia Schiffer, who is married to the director, Matthew Vaughn. See more...
Movie Mistakes blog
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Kick-Ass (2010) - 7 quotes
starring Aaron Johnson, Chloe Moretz, Christopher Mintz-Plasse, Mark Strong, Nicolas Cage (add more)
Hit Girl: Show's over, motherfuckers.
Dave Lizewski: How come nobody's ever tried to be a superhero?
Marty: I don't know. Probably because it's fucking impossible, dipshit.
Huge Goon: Woah! Hey, it's me, boss! Everything's under control. Chris: "U-under control"?!? You're grabbing a fucking bazooka, you dumbass!
Dave Lizewski: With no power comes no responsibility.
Dave Lizewski: How do I get a hold of you?
Hit Girl: You just contact the mayor's office, he has a special signal he shines in the sky. It's in the shape of a giant cock.
Damon Macready: Tool up, honey bunny. It's time to get bad guys.