Top Definition
A person who is not only your friend, but also someone you care about like they were your son.
Jake: Whats wrong Jeff?
Jeff: She broke my heart dude....
Jake: Lets go to the bar man. We'll fix that broken heart.
Jeff: Thanks man... You're a good friend.
Jake: No problem dude. You know I've got your back. You're my sonfriend.
by renegadeangel92 March 30, 2010

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