50 Cent has been Jeremih's biggest advocate ever since he "saved"  the R&B singer from being dumped by Def Jam in 2010. According to Fif, he did that by adding a verse to the Jeremih track 'Down On Me,' and making it a hit.

Earlier this month, 50 blasted the label for mishandling Jeremih's career and the rollout of his new album Late Nights. Jeremih piled on that criticism a few days ago by ripping Def Jam for not getting enough albums in the store for him

Now it's back to 50. In a new Instagram post, he says he's so mad at Def Jam for screwing up Late Nights that he needs to figure out what record executive to slap.

Def Jam ain't shit, this boy the whole shit solid. Jeremih "Feel Like Phil" SMH I just wish I knew who to slap the shit out of over there... #EFFENVODKA #FRIGO #SMSAUDIO check it out on YouTube

A video posted by 50 Cent (@50cent) on Dec 15, 2015 at 10:05pm PST

Late Nights completely flopped, selling fewer than 14K in its first week. Is Jeremih getting screwed by his label, or does he just not have the talent to move units?