I hope you know that doing something as drastic as P-Funk's plan will leave you in a rather unattractive state, considering you're doing everything contrary to muscular maintenance/growth, but yeah, I suppose you could drain some water that way. You could also buy a diuretic....but anyway like mentioned you should've planned way in advance, so you would be where you'd like to be at this moment as opposed to a week from now
Peace.