"If I keep drinkin' dis, mebbe the next sip be cold! Mmmhmm!"
I saw something disgusting at a fast food restaurant one time. This [censored] was filling up a drink at the soda fountain and would put a little of the first soda into the cup, and sample it. Then it turned the exact part of the cup it had sipped from and rubbed it against the spout of the next type of soda. Then it sampled that type of soda. It turned the cup again to rub the saliva from that part of the cup onto the next soda spout, etc. until it had rubbed its saliva on every nozzle/spout. Then it finally filled up its cup and sat down.
I don't trust any soda fountains now!