Matt Damon has compared his daughter's laugh to a machine gun.The 'Bourne Identity' actor - whose wife Luciana gave birth to Isabella six months ago - loves making his daughter laugh so he can hear her distinct giggle. Damon, 36, said: "You do this thing where you can either give her a raspberry on the stomach or if you sort of act like you're going to munch her underarm and she laughs like a little machine gun. I could do it forever."The 'Good Will Hunting' star also confessed he couldn't stand children before he became a father. He admitted: "I didn't think that this would happen to me."Other people were always showing me baby pictures or trying to hand me the baby, and I was like, 'Get that thing away from me. I don't want to touch your kid. Give me a break.' But I'm totally into it now."Damon, whose latest movie 'The Good Shepherd' is released this month, now feels honored to be a father. He said: "I feel like I got made a member of a club that I didn't know existed. It's great, great. That's been just amazing. It defies description, actually."When she was first born, I was excited for my daughter to be two. I was excited for her to start talking and walking and toddling around hanging out, but I didn't realize how much personality little people have right off the bat. It's just been so much fun."