Yup, he stated "thongs", plural.
of course it's plural. have you learned nothing in way of yin yang, in yo, aiki and whatnot? you need at least two: one represents yin, the other, yang. one with pokadots and the other with zebra stripes. one for day time activies and one for the evening stroll along moonlit sandy beach. sometimes you have two wear both because at the extreme yin, it becomes yang, and vice versa. i don't know why you guys bother learning IP/IS when you can't even manage such simple concept!