Why do some women within a certain circle (liberal, sort of hippie, younger set) make hummy, purring sounds? Is it something that happens when you smoke pot, or is it a mannerism, or do men find it attractive? It's pleasant enough, but I don't know how to respond to it, because these sounds seem to be used in lieu of speech at times. And....I just cannot bring myself to make these sounds as a response. It just isn't me, lol.