An erection that occurs when a person has a bunch friends come and hang out or do activities. Therefore the person gets an exasperating boner.
NOT GAY AT ALL!
OMG! My friends are coming over i'm ganna have such a friend boner.
by teddycakes January 30, 2012
It is a non-sexual comment directed at your friend for an action he/she performed that was totally awesome.
That was so awesome I got a friend boner.
by gigglybutviolent January 29, 2004
when you see someone you want to be friends with because they are interesting, attractive, or otherwise fly
I have a friend boner for this kid on my floor because he looks so cool but we haven't ever spoken.
by friendbonerfiend November 05, 2010

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