50 Cent's war on Diddy has just begun.

First, the Queens native revealed to a Phoenix radio station that Diddy's current single, "Hello, Good Morning" was awful. Then, weeks later, Fif mocked the mogul some more during a call into DJ Whoo Kid's G-Unit Radio program on Sirius Satellite Radio.

Now, the G-Unit head honcho has issued a Twitter petition against the Bad Boy mogul urging users to not support Diddy's exploitation of the fallen legend, Biggie Smalls.

50 feels Diddy's promotion of Smalls is tarnishing the legacy of Christopher Wallace and is now demanding the fans to speak up.

Reps for Diddy have yet to respond to 50's Twitter petition.