Chris Brown Strikes the Pose

3/1/2009 4:50 AM PST
Chris Brown had a blast on a jet ski Thursday in Miami, where he's spending time with Rihanna -- the woman he allegedly beat just weeks earlier.

Chris -- who looks like he's recreating the wind up leading to the punch that left Rihanna bloodied and bruised -- doesn't seem to have a care in the world.

And here's an interesting tidbit: Rihanna is being shadowed by one of Jay Z's beefy bodyguards.