Surely it's just water under the bridge by now?
Dad: Hey did you hear a bout what happened in Texas the other day?
Me: No, what happened?
Dad: Well there was these kids standing on an overpass of the highway, and they were dangling a noose over the edge trying to distract drivers. After a while the noose gets lower and lower and ends up catching a guys hand hanging out of the window, and ripped it clean off.
Me: Holy Shit no way that happened?!
Dad: Yup! And guess what they charged the kid with?
Me: I have no idea.
Dad: Armed Robbery....
I start with just having a normal conversation like normal people do while I wait for an opportune time to slip in this story of mine.
Did you hear about that kid on the bridge with the brick about a year ago? Yeah, this kid was apparently on an overpass for I-95 (nearby interstate. Locality makes it believable.) with a brick tied to a rope. He just sat there swinging it at passing cars, breaking their windshields just for a laugh. Eventually, the brick got caught in one and didn't come back out like it usually did. Instead, this time, the rope got wrapped around his arm and the sudden yank pulled his arm clean off. The driver tried to sue, but got nowhere because it was a kid. However, the driver was arrested for armed robbery.
Gets groans every time.