ewwww! You dirty dirty boy!I just leave mine in the fluffy pocket of my proto pants when they go in the wash - which isn't to often!
thats an ever so slightly poofy way of doing it lolSoak it in some hot water to get all the paint out of it, you can use some detergent if you want. Then once it's clean fill up the sink a bit and pop some fabric softener in the water and leave it in there for a few mins, take out and leave to dry. Usually refluffifies quite well.