In the meantime he's downloading some album torrents to listen to during it.
Illegal per the DMCA, if the music is copyrighted.
Also illegal if it's copyrighted and he's not downloading from the actual website. Would also be illegal if he's under 18 (I knew some college freshmen that were 17!).
Illegal if the girl was actually underage.
Possibly illegal, if he's underage, depending on the state's law.
There's a crime here if anyone at the party was drinking underage (and if the music was loud enough to violate local ordinances)
Possibly illegal, depending on the state/locality's public indecency laws.
Providing alcohol to a minor/contributing to the delinquency of a minor
This is public indecency or whatever if he actually did it.
Illegal to have alcohol in the non-alcoholic club. Possibly also public drunkenness, maybe?
Public drunkenness
Public indecency, if any of her naughty bits were showing through the glass
Public drunkenness
Littering, if they left the bottle.
Violates whatever laws govern strip clubs; possibly prostitution as well since he presumably payed for the lap dance.
Exiting the vehicle to inspect the accident while remaining in the intersection might be a violation of those traffic laws that require you to remove an accident vehicle from the flow of traffic if it's not too damaged.
Also, the other driver committed a hit and run because he left before it was really acceptable for him to do so. He'd also have to do an improper lane change to get around the car in front of him.
Violation of whatever laws govern massage parlors, certainly, plus prostitution probably.
Same as above.