Conservation of Femboy Ratio

The term refers to a phenomenon where the percentage of fembois in a given population is always about the same.

For instance, if 10% of a town is femboys then approximately 10%, or 1 person in a 10 people gathering, will be a femboy.

Karl: Man! We can use some femboy in our 9 people group!
Mark: We just gotta get one more person and there will be a femboy among us. It's the conservation of femboy ratio.
Karl: That's kinda sus.