Thanks John, I hope this is not too rude.
A guy joined a nudist camp and when he told his mum, she didn't believe him. So he sent her a picture of his top half. A week later his grandma wanted a picture but he accidentally sent the bottom half.
Knowing she had bad eyesight, he didn't think much of it. A week later his grandma wrote him a letter saying, that she didn't like his haircut, because it made his nose look too big.