the discussion on this particular occasion had started off mildly with a humorous monologue from bhakti regarding the apparent health hazards of tea-drinking , the claims of which were espoused by some drunken vacationing physician who had wandered over from a riverboat casino to the main avenue of yami and into aunty durgas teahouse , one day , presumably for the sole purpose of decrying the enfeebled matron as a merchant of death .