US Marine mocking slang for Fallujah, Iraq (a play on the stateside music festival Lollapalooza) which evolved a lashed-up psywar 'soundtrack' of hard rock, metal rap, horror film samples, and scatological insults designed to taunt and intimidate the insurgent enemy while priming the Marines for close quarter combat. Platoons in Lt. Colonel Brennan Bryne's 1/5 (1st Battalion/5th Marines) "competed to dream up the filthiest insults for the translators to scream over the louspeakers. When enraged Iraqis rushed from a mosque blindly firing their AKs, the Marines shot them down." Sonic exchanges played out day and night between the loudspeakers of Marines and Army psywar units and the mujahadeen mullahs.
Lt. Colonel Bryan McCoy would play "Let the Bodies Hit the Floor" by Drowning Pool at full blast to his assembled 3/4 Marines before battle. Other examples include "Welcome to the Jungle" by Guns and Roses and "Hells Bells" by AC/DC.
Source: No True Glory: A Frontline Account of the Battle for Fallujah by Bing West (2005)