Then the cuspidor is for spitting out the water you have just swilled around your mouth...........
RainyDay, may I suggest you spit into a receptacle and measure it. I'd be very surprised if you managed to eject more than 100mls of saliva/mucus (not sure what you are hawking up). (A mug full would be around 250mls, and any stomach can cope with that!)
When playing sports attempting to swallow saliva while wheezing like old nag would almost surely finish me off. You would think that players who have done someting remarkable (like scoring) would refrain from spitting for the few seconds that the camera is most likely to be on them.
Should I balance this receptacle on my handlebars while weaving in & out of the slow moving traffic and avoiding the drivers who regularly travel the wrong way down the 1-way street on my cycle route?
I'm sure you could attach it to your handlebars, or to your chin and just dribble it in, jsut as an experiment to see how much excreta you are producing. I'm only suggesting this as you claim the volume produced is too much to swallow. Don't know what you're doing anyway to produce so much saliva - or is it mucus? May I repeat that salivation is NOT a physiological response to exercise.