New York rapper 50 Cent is getting some unexpected smoke fired his way. The hip-hop veteran is catching some heat from longtime jailed foe Supreme McGriff‘s son days after trolling him.

Over the past few days, McGriff Jr. has relied on Instagram to get at Curtis Jackson with his own trolling posts.

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My favorite song foreal 😉

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Last week, 50 Cent blamed ex-girlfriend Shaniqua Tompkins and their son Marquise Jackson for blowing over $1.3 million of his financial support.

The tensions ultimately stem from Marquise posing alongside Supreme’s son.

As for the hate for the other guy in the photo … it presumably comes from 50 Cent’s longstanding beef with his father, Kenneth “Supreme” McGriff. The 2 are archenemies, and Griff — a former Ja Rule and Irv Gotti associate — allegedly once plotted to kill 50. Supreme is currently serving a life sentence for murder conspiracy and drug trafficking. (TMZ)

Last year, Marquise updated fans on where things stood between himself and the G-Unit boss.

“I had a relationship with him growing up but I can’t pinpoint when things started going sour but it was something over time where a certain event occurred and it was an unhealthy bond,” Marquise told host Scott Bejda. “I haven’t spoken to him. The most contact we usually have is through Instagram. He didn’t make it to my graduation for what reason you would have to interview him and ask him that.” (“Murder Master Music Show”)