A general feeling or vibe, usually negative (bad ju-ju). Can be used in reference to karma, etc.
I'm getting some bad ju-ju from that cop. I think he's going to arrest me.
OR
I'm not surprised I broke my arm; I've still got some bad ju-ju from that time I hacked xyz.com.
Country ass nigga #1: aye ju getta pack uh rillos y u inna sto so we can roll this gas up!
Country ass nigga #2: aight...(walks away)
Country ass nigga #1: (talking to himself) we gon get these hoes loose tonight ju (smiles)