Jarrell Miller appeared to be in good spirits during his arrest earlier this month ... with new police video, obtained by TMZ Sports, showing the boxing star was actually cracking jokes while in handcuffs.
Miller was confronted by Hollywood Police Dept. officers in Florida back on Jan. 2 ... after he had been accused of body-slamming a car dealership employee, before stealing a truck right off the lot.
According to police documents, officers were able to find Miller via a tracker that had been placed in the vehicle .