Justin Bieber 'Pranks' His Grandma with a Sexy Nude Serenade [NSFW]

Justin Bieber 'Pranks' His Grandma with a Sexy Nude Serenade [NSFW]: Justin Bieber has something of a knack for rubbing objects on his junk.

But he apparently went whole-hog last Canadian Thanksgiving while visiting his grandma in Toronto.

According to TMZ, Bieber had overslept that October morning, and awoke to his family noisily gathering downstairs.
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So, being the Bieber we all know and tolerate, he decided to play one of his classic pranks and show up to the reunion in his birthday suit with only a guitar between him and indecent exposure.

TMZ, which obtained photos of Bieber's buck-naked serenade, says the 19-year-old man-child was strumming along to nothing in particular while singing "I love you grandma."

Bieber's nana, for her part, thought her grandson's semi-incestuous shenanigans were a hoot, but asked him to put his clothes back on just the same.