Apparently Justin Timberlake didn’t think his $5 million home in the Hollywood Hills home was private enough, so he reportedly built an upscale treehouse in the backyard, according to the National Enquirer.

 

“Justin’s still a kid at heart. He had the tree house built so he and his buddies could escape to drink and play cards,” a source says. “He even posted a sign saying, ‘No Girls Allowed.’”

 

That sign reportedly even applies to girlfriend Jessica Biel.