Since the question doesn't clarify what exactly, it IS answerable. It would be classed as a general question. Eg. do you walk ? One doesn't need a destination attached to answer the question. So to answer, yes I have spit ( well, spit of course and anything I find objectionable that has entered my mouth ) and yes I have swallowed all sorts of things. Food and water ( or beverages) mostly, even air. Bugs too while riding my bike but I have also swallowed some ( free protein
) I have on the other hand also swallowed my partner's spit and her juices.