One of the more controversial definitions of modern day, T.M.I. is officially defined by the Surgeon General as (Length*Girth*Width)/(Angle of the shaft*Mass) where Length Girth and Width are measured in inches, mass is measured in ounces, and Angle of the shaft is measured in radians where 0º is perfectly vertical and 180º is pointed straight down.
Alternatively, Randy Marsh, has proposed a new equation which has gained much support. Randy's equation is ((Length*Diameter)+(Weight/Girth))/(Angle of the tip)^2 where Length, Diameter, and Girth are measured in inches, Weight is measured in pounds, and angle of the tip is measured as 1-Angle in radians to account for extra YAW.
According to the Surgeon General, my T.M.I. was 6.1 inches, but according to Randy's equation my T.M.I. is 10.8 inches! Randy rules, wooo!