It's no secret that 50 Cent and his eldest son Marquise don't get along.

Yet, Marquise showed up last night at the Barclays Center to see 50 perform at the Master Of Ceremony show with Cam’ron, The Lox, Fabolous, DMX, T.I., Snoop Dogg and more.

When somebody asked Fif why he didn't give his boy a backstage pass, Fif went off. 

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"That is not my son" -#50cent response after a fan ask him why his 'oldest' son #Marquise was not backstage with him as he perform. 👀  The young lad was in the crowd showing support for his dad at the #BarclaysCenter jamming to his dad's hits.🎵🎵 Don't they look alike folks? 😥👀 #fiddy #Fatherandson

A post shared by 9jasdotcom (@9jasdotcom_) on Jun 29, 2019 at 10:04am PDT

"Negro why you didn't give your own son backstage passes he in the crowd like regular people smfh," someone wrote in the comments

"I got a blood test that's not my kid fuck outta here," Fif said about his lookalike kid.

When will the pettiness end?