50 made the comment - obviously in jest - while responding to a fan on Instagram. Look:
The fan was talking about how Marquise paid to go see his father in concert.
Marquise posted from a 50 Cent concert one Friday night. 50's eldest son claimed, in the below video, that he bought the tickets to his father's concert - and wasn't allowed backstage at the event.
On Friday (June 28), 50 performed at the Barclays Center in Brooklyn for the Master of Ceremony show along with the likes of Cam’ron, The Lox, Fabolous, DMX, T.I., Snoop Dogg, Das EFX, Junior Reid and M.O.P. Fif's son Marquise was in attendance at the show, sharing footage from the crowd on his Instagram Story. In the clip, he dances happily while 50 performs "I Get Money" and "Magic Stick." It is unclear if he is enjoying the show ironically. 'Quise is in the middle of the crowd with his friends during the set. This fact was not lost on someone who questioned 50 about it in his Instagram comments.
50 and Marquise's relationship soured in the past couple of years, after it was clear that the rapper would no longer be responsible for paying Marquise's mother child support.
50 and Marquise have been at odds for years with 50 and 'Quise throwing shade at one another on multiple occasions. The Queens mogul also has a strained relationship Marquise's mother. Last year, Marquise FaceTimed with Floyd Mayweather during the boxer and 50's beef in order to spite the rapper. Nobody wins when the family feuds.
The mogul/rapper paid Marquise's mother millions of dollars in child support over the years, despite having a toxic relationship with her. And when he was no longer legally obligated to pay anymore, 50 Cent stopped.