Yes, believe it or not, on the same flight. Granted, the destination was L.A. so take that for what it's worth.
I am always shocked when people are willing to remove their footwear and stroll around the airplane barefoot, no socks, no stocking, no anything. I was beyond words when a fairly put together woman removed her shoes to reveal bare feet and proceed to walk towards the back lavatory. The worst part was not that she was willing to expose naked skin to God only knows what forms of nastiness are spawning on the lav floor, but that she herself was spawning some form of fungus between her toes...evidenced by the chalky white dusting covering on and around her pretty pink toenails. Frankly, there is no hue of polish that will cover up, disguise, or otherwise distract the eyes away from the anti fungal dust.
To top it off, while fungus foot lady is in the bathroom, a lovely, young dad walks back, bottle in hand. I know what's coming, I've done it a dozen times before. I prepared the ever so snazzy "hot water bath" to warm the baby's bottle. (Don't be fooled, this consists of pouring hot water into a plastic drinking cup and dunking the bottle in it until it reaches the desired temperature). The funny part is that as I'm submerging baby's bottle into its bath, Dad looks at me quizzically and asks in a befuddled voice, "You mean you don't have a bottle warmer on the plane?" Now I don't know what airline he's racked up his frequent flier miles on, but I'd sure like to try them out if they come with everything...including a bottle warmer. Except the bottles I prefer require an ice bucket, but I'm sure they'd have that too.