Top definition
A pact made between two or more bros that cannot be broken under any circumstance. Usually made when the two or more bros can only entrust each other with something in need of dire secrecy.
The two bros made a Bropact to not steal each others clothes waiting for them after they streaked the lawn.

"I will tell you but only if you make a Bropact not to tell anyone dude."
by thatonebrowiththeface September 19, 2011
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