(n.) Bros per minute or BPM is a very efficient way of measuring the intensity of an argument. As one can tell, it is the amount of uses of the word bro for every minute of an argument. 1-2 BPM shows that an argument may be starting. 3-4 BPM shows that an argument has already started, while 5+ BPM is a intense argument.
Job: "Hey, bro"
Dane: "What did you say bro?"
J: "You heard me, bro!"
D: "Bro! Shut up, bro! You best not be starting something, bro!"

Bystander: "Man that is an intense argument... The Bros Per Minute will soon be over 9000!!"
by Derp and Neele November 21, 2013
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