Spit? No, not really....

So, when you open your spit valve, water key, or whatever you want to call it and all that liquid comes pouring out onto the floor or where ever it is that you let it drain, is it spit? How could it be? Wouldn't your horn be nasty if you spit in it all the time? I'd think it would become disgusting in a hurry because spit is pretty gross even if you're pretty hygienic. It's just distilled water from your breath! How could it be anything else unless you purposely slobber while you're playing, but if you think about it, the water never leaves a stain unless it soaks into the wood, but even then there's not much and it never smells, has no color, texture, bubbles (like when you spit? am I right?), so yeah, it's just water... unless you're pretty tanked, then it might be moonshine......