^Thanks for the advice, though I don't feel comfortable using those as a spit shield. Is it OK I use... what were they called again... those little white masks that doctors use to cover their face? You can buy those anywhere right at a cheap price?
You just don't wanna be caught dead buying pantyhose. =P
A spit shield is essentially a fabric-covered ring that is held right in front of the mic. It won't muffle your voice, but your consonants won't be as explosive. Most recording studios have spit shields for their mics. If you've seen shots of recording studios, that circular thing in front of the mic is the spit shield.
Dust masks may muffle your voice too much. I've toyed with using a dust mask for recording, once, as I was experimenting with a character who wears a mask. The mask ended up muffling my voice too much, so we ditched that idea and ended up just using a flanger in post. You can try a dust mask, they're pretty cheap, but it may muffle your voice too much. You'd be better off with a spit shield or even just tweaking the track in post.