SHUT THE HELL UP >: I'M TRYING TO HAVE A PEACEFUL NIGHT. Don't make me go out with the shotgun app on my iphone and blast it with a hockey mask on pretending I'm a mass serial killer who decided to attack 20 year old males who decide to be noisy at 1am in a park.
A chainsaw app would be more appropriate, or you could always blare music at them. Disney Music. One way or another you'll be happy and they'll be taken care of.