A fake friend.

One who pretends to be your "bro" but really does not care.
I thought Bob was cool but he turned out to be a total Placebro.
by AMJacker January 28, 2010
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A white guy that tries to act like like he is black by wearing the baggy clothes and speking ebonics.
Rodney is a placebro. He's having a racial identity crisis.
by Jimmy The Schwantz November 14, 2008
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An event in which a bro who has recently undergone emotional turmoil is put at ease by the mere act of being around his brethren, though in actuality they offer no constructive advice or amelioration of his dilemma. It is oftentimes used in complete substitution of problem solving and leads to the inability to handle trying situations.
Bro 1: "Yeah, last night I found out my girlfriend had been cheating on me. I was bummed at first but then all the guys went and got some Buds and watched 300 so it's whatever."
Bro 2: "You know, the placebro effect is only temporarily useful. Real talk, you're going to have sort out your problems at some point".
by ethersworn November 18, 2011
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When someone states that they are hanging out with a friend that is fake or made up. If a person is trying to hide something (i.e drugs, fat/ugly girl or guy)then they make plans with their placebro to keep friends from getting suspicious.
Bobby has been hangin out with this guy Jim every Friday night. Not one of his friends have ever met him. I'm starting to think Bobbys smoking crack and Jim is a "Placebro (pla- see- bro)" .
by KCBROOKLYN718 March 29, 2009
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A Bro that is your backup Bro when you're Bestest Bro is unavailable
Jack: "Hey Chet! Do you want to Bro out tonight?"
Chet: "Ah sorry man, I've got plans."
Jack: "Ah, that's alright. I'll call up Alex. He's my placebro."
by Bclique22 May 24, 2015
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