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He's done it again! After painting his house (and being forced to cover it up), tagging girlfriend Karrueche Tran's car and putting his art the side of a popular eatery in Hollywood, Chris Brown took his graffiti skills to pal Justin Bieber's pad.

"Breezy spray painted my half pipe. He's super dope," Bieber tweeted, along with the photo above. The Biebs has been into skateboarding for a while now, and he even skated around with Lil Wayne when the two worked together back in 2012. We're guessing Weezy is a little bit better on wheels, but if Bieber has a half pipe, he's obviously been practicing!

And speaking of pipes and dope, we have an interesting story coming about Biebs ... stay tuned, we'll be posting that a little later this morning!