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From the words "fun" and "vagina"= "fungina".

Used to describe an attractive younger woman, usually in the age range of 18-21 years old. The word "fun" is the operative word because these women are assumed to be at a stage in life where sexual experimentation is a priority.

It is interesting to note that a younginer is a predevelopment stage to a funginer. One major difference betwen the two is not only the age difference but the fact that though a younginer is more likely to be a furginer, a funginer is more likely to be a smoothginer. Also, funginers are legal in all 50 states of the US.
Did you see that funginer? She had tits the size of my head!
by Chris Perry 88 February 14, 2008
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