Young Buck isn't taking 50 Cent's disrespect lying down, and in a new diss track - the former G-Unit rapper claims that he wrote several of 50's hits.

Buck unleashed his "Foofy Freestyle," in which he spits over the instrumental to Drake's Pusha-T diss "Duppy Freestyle."

Buck raps:

"To introduce the world to this gangster sh*t/ I wrote Too Rich for you and this the thanks I get?/ You taught that young boy to snitch, n*gga you think you slick/ Gas him up on the 'gram just to make you lit/ Get you out of this jam, you gon' need more than a skit/ More than a f*ckin' post, n*gga you know I won't quit"

50 has been going at Buck, alleging that he owes his money and also trolling him over the rumors that he has a relationship with a transsexual woman - a claim Buck vehemently denies.

Listen to the diss track below.