D2F ratio

D2F ratio or "dick to floor" ratio is used to determine the relationship between two or more men and the distance between their penises and the floor. Often used to calculate the most efficient way to jerk off men at TechCrunch Disrupt events.

Guy 1: How do we jerk off 4 men at the same time and dick swap them to maximize jerking?
Guy 2: Well we'd have to figure out the D2F ratio and group men based on that.