manliness ratio – n. the ratio of a fully erect penis to a soft one. The bigger the ratio, the more manliness the person has. The ratio is erect/soft. If someone with a 3 inch penis when soft becomes 15 when hard, that would be better than someone who had a 5 inch soft penis when soft that only becomes 6 when erect.
Funny fact: davepoobond wrote this at work on the back of a piece of paper, and forgot it there. So the person who found it must have been thinking “WHAT THE FUCK!!!??”