Flotilla
A fleet of rowboats piloted by drunk, tattooed, shirtless, sunburned and partying douchebags (or douche bags) that floats slowly downriver with the current.
Often contains pontoons constructed of 2 or more canoes (going to have to check the picture a bit more closely) and a platform placed atop the canoes on which the douches can drink, dance, grill, fire squirt guns, simulate sexual acts, play with dogs and/or heckle the Queen who is trying to enjoy a natural body of water.