[ame=http://www.youtube.com/watch?v=u1S9ZF0-rpM]Snoop Dogg's - Upside Down feat. Nipsey Hustle & Problem Video [HD] - YouTube[/ame]
To be fair that could be a shot at a few rappers Drake (Owl Sweater), T.I. (Hustle Gang Sweater) etc etc.
full song: [ame=http://www.youtube.com/watch?v=LdIp_LnwPNk]Problem - Team Up [The Separation] - YouTube[/ame]
Definitely shots at Nip...the meeting in the park, the line about him getting lapped, the sweater line and the line about getting beat so bad by your homie thought you was getting packed out.