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1.
A favour that one bro does for another without expecting anything in return.
Guy 1: "Hey Robbie"

Guy 2: "Hi Jonno"

Guy 1: "Thanks for helping me arrange my fishing rods last night"

Guy 2: "No problem"

Guy 1: "That sure was a bro solid that you did for me"
by AllTheWords March 12, 2013