Cost per Orgasm: The amount of money invested in a relationship divided by the number of orgasms achieved during that relationship. Typically, the CPO is very high during the formation (dating) stages of the relationship. Once the relationship has formed the CPO sharply declines then gradually increases over time (usually during marriage) until the CPO exceeds the original formation stage.

“The first three months are great; we’re going at it like rabbits. My CPO is at an all time low.”
by LeeC December 12, 2006
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Chowing purposes only
Friend 1: do you like him like that?
Friend 2: nah, he’s for CPO
by Miss 29 February 14, 2023
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Certified Pop Off. An event that you would consider more enjoyable that your typical Friday night. You know something was a Certified Pop Off if everyone is talking about it.
That concert last night was a CPO!
by SheeshM August 16, 2017
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I wouldn't bother upgrading to Vista, it's a CPOS
by aum108 September 21, 2007
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