MudSlogger said: Find a swamp with lots of thick, squishy, slimy mud to wallow in!
hell yeah! but on a serious note, if mud does trip your trigger, i've used google maps for years to locate quarries. they look like large dirt scars on the landscape. they often have large clay pits that are secluded, with plenty of standing water to wash off in, too. it's a total blast!
check out some of the pics in my "mudventures" album on my profile.