50 Cent wants a piece of a former UFC champ.

And we're not talking about Conor McGregor.

Fif took his fingers to Instagram and challenged Rampage Jackson to a fight for the sin of having the same last name.

Oh 💩!!! We might have to see this go down!!! 🥊 📸 @50cent @rampage4real pic.twitter.com/mbzD4atKRp

— SOHH (@sohh) May 9, 2018

"Don't get it fucked up. I'm the baddest Jackson around this motherfucker. Now, if we can get the money right, Rampage got a problem on his hands," Fiddy wrote in an Instagram post.  "Y'all talking all this shit. Now I want to fight. Pay-per-view."

50 Cent recently met with Bellator MMA President Scott Coker, so maybe he's planning a stunning (and potentially lucrative) reinvention in the cage.

Whatever is going on, Rampage ain't worried.

Is 50 serious?!🤷🏾‍♂️

A post shared by  Quinton Jackson (@rampage4real) on May 8, 2018 at 10:36pm PDT

How long do you think 50 could last?