(n.) Pronounced like the spanish "por favor", bro favor is an act of goodwill asked of one's "bro" or "homey".
(adv.) Still pronounced like the spanish "por favor", but used in place of the word please.
(n.)"Dude, I could really use $7 to buy this limited edition copy of Spawn. Do me a bro favor and spot me $7?"
(adv.) "Spot me $7 bro favor?"