When did this:
Thong~a rubber or leather foot covering held in place by a strap between the big and second toes; usually worn casually in warm summer months; likely to cause blisters during the first few wearings.
Thong~a fabric undergarment providing minimal coverage, held in place by a strap between the...um, cheeks. Can be worn year long although remains startling to be seen in public.
Thank goodness there have been no reports of blisters.
Continuing with the A to Z challenge. I have nearly made it, people! Only six more letters to go!!