defecation without regulation; pooping where you please, going back to your roots as a mammal and rejuvenating your primal pooping instincts. where a 'square' dumper sees a toilet, a free dumper sees a vast floor of possibilities, 4 walls that are his canvas, and a white toilet that might look better brown, ripe for a fresh steaming pile of joe.

Literally everyone, ever. Including the writer of this definition.