Top definition
When Someone sees somethinq/someone they dnt like on/with there friend

if there homie is with an uqly smut or Female.
Male ; Yeo , who is that my guy ?
Friend ; My new shawty .
Male ; haha . Not My Boy

male; why the fck ya posinq like that? Not My Boy
by JazzzDoee July 17, 2011
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