Bro-Downs can only be said to occur when females are conspicuously absent from an extended session of boozing.
The term 'bro' is an abbreviated form of 'brother'.
The more bros present, the more severe the bro-down.
Bro downs are characterized by an increasing level of sexual angst that correlates directly to the amount of time bro-ing it down and volume of booze consumed. They will almost certainly include, but are not limited to: a fight, challenges of strength, discussion of the last girl you gave a salty pirate
or donkey punch
to, accusations of homosexuality, and eventually a trip to a peeler
, snap off parlour
, or rub'n tug