Fixing a dented roof?

My friend jumped on my roof and left a big dent in it and now it flaps in the wind with the windows down lol
How would i go about fixing this?
How would i go about fixing this?
Comments
Oh yeah and I second the kicking him in the jewels.
As you can see in the pictures from my "Member's Ride" thread, the roof is almost perfect. If I hadn't told you just now, you wouldn't know the roof was ever dented.
Seems to be pretty common with the wagons, since they are so thin.