Top Definition
A man's erect/flaccid ratio. Can be calculated using inches or centimeters, as the ratio will not change.

A penis which is 6 inches while erect and 3 inches while flaccid will result in an EF ratio of 2.
Just cuz your dick is 4 inches while soft as compared to my 2 inch soft dick doesn't mean it's bigger. I have an EF ratio of 4, while yours is 1.5
by I M A Dogg March 17, 2009
7 Words related to EF ratio

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