Justin Bieber Serenaded His Grandma In the Nude and TMZ Got the Pictures

(PacificCoastNews)Poor Justin Bieber is probably wondering which of his family members he's going to have to cut off today. A couple of pictures of Bieber serenading his grandmother in nothing but a strategically placed acoustic guitar surfaced on TMZ in the early hours of Monday morning.

Justin's grandmother is now envied by millions of 14-year-olds. (TMZ)

According to TMZ's source, the pictures are from a prank Bieber pulled on his family around Thanksgiving: "We're told birthday-suited Bieber went right up to his grandma and started belting out some impromptu lyrics ... like, 'I Loooove you grandmaaaa ... how are youuuu ... helloooo grandma.'"

Wait — maybe this is all a cultural misunderstanding. Like, how do we know for sure this isn't how all Canadians celebrate Thanksgiving? And Bieber actually looks better in the buff than he does in his usual drop-crotch pants, so maybe this isn't as embarrassing as it looks.

Bieber, 19, has been taking a break from the spotlight as he focuses on writing and recording his next album. He was absent from Sunday night's Teen Choice Awards, but tweeted, "4 years in a row. #tcas . That's love. Thank u. Enjoying the break. But always here. Thank u. This is forever :)"