Justin Bieber is hard at work in the studio, prepping his forthcoming new 'Believe' album, but that doesn't mean he doesn't have time to visit with friends -- or go skateboarding. On Wednesday, the Biebs tweeted a pic of himself chillaxin by a mini-skate park with his good bud and "big bro," the notorious Lil Wayne."Good time in the studio last night. back at it tonight," the Biebs said, sharing the epic black and white photo shown above. "oh yeah...and big bro came thru..."

He later clarified for his 17 million followers that by "big bro," he of course means Young Money hitmaker Weezy -- and even gave fans another pic, this time showing the rapper's face to make him recognizable. "and when i say big bro i mean @LilTunechi . #BELIEVE IT #family," he said.

Just last week, Justin's other 'older brother' Usher stopped in to see how work is going on 'Believe,' as did Timbaland, who stopped into the recording booth to jam, and 15-year-old 'iYiYi' heartthrob Cody Simpson, who also laid his own impression on a few tracks. Clearly, the Biebs keeps it in the family -- the music family, that is -- and we know that all of these master collaborations are going to be the winning ticket when 'Believe' is finally unveiled.