CSI: Crime Scene Investigation, Season 9

[Nick and Hodges are playing Mailbox Baseball in the parking garage]

Catherine:
Nicky, for God's sake, are you trying to break your arm?

Nick:
Don't sweat it, I tried it on the dummy first. Didn't break his arm, it's not gonna break mine.

Hodges:
It became clear during our experiments that it would take something far more massive than an aluminum mailbox to generate the force necessary to cause the fracture in the victims arm.

Nick:
We're thinking telephone pole, sign post, I'm gonna go back to the crime scene and check it out.

Catherine:
Then why are you guys still in here smashing mailboxes?

Hodges:
Because it's fun. My turn!