X's and O's
Derived from the use of the letters X and O as common stand-ins for other concepts.
"x-s-and-o-s." YourDictionary, n.d. Web. 15 December 2018. <https://www.yourdictionary.com/x-s-and-o-s>.
x-s-and-o-s. (n.d.). Retrieved December 15th, 2018, from https://www.yourdictionary.com/x-s-and-o-s
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