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1. improper fraction
A woman who has big breasts and no ass. A woman who is large at the top and small at the bottom.
"You have 36DDs and you wear a size 4 with no ass. You are an improper fraction"
2. improper fraction
A couple where the woman is larger than the man, either in height or weight.
Dave: Do you see that couple over there? She's enormous and he's thin as a rail.
Bob: Yeah, I always feel bad for guys in an improper fraction.
3. improper fraction
a person whose chest is much larger than their abdomen (from a term for a fraction where the numerator is greater than the denominator)
Only after her plastic surgery did she realize that she had become an improper fraction.
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