Actually the acronym M.O.S that stands for "Member of the Opposite Sex".
(You must have seen this word in some purity tests around the net)
(You must have seen this word in some purity tests around the net)
Have you performed a strip tease for an MOS?
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Get the 'mos mug.short for make out session. Used in context with mos it to describe incognito when you are going to make out without having to say it.
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