The sacred oath that takes place between two bros in which each
man takes the phallus of the other and proceeds to slay
the dragon.
If the oath is
broken, the phallus of the oath breaker shall be violently removed.
Ex 1: *While playing hearts*
Gareth:"Bro I promise I
don't have the queen of spades, you can play that king."
Pierre: "I do not believe you"
Gareth: "I will BroShake on it"
Ex 2: Marwan and
Michael secured their promise to not look each other in the eyes during their
3-way with a BroShake.