Top Definition
A mans Brennan Ratio is determined by the number of spontaneous erections that man has had in the past 7 days.
Man 1: "Dude, my Brennan Ratio is off the scale"
Man 2: "Impossible, there is no scale"
Man 1: "Alright! No need to be pedantic"
Man 3: "You guys need to get laid"
by Dr. Bonana July 13, 2012
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.