Los Angeles, Aug 7 (IANS): Singer Justin Bieber's father has been joking about the star's manhood after naked pictures of him were published.

After the Grammy award winner's naked images were published while he was on a holiday in Hawaii, his father Jeremy, 41, took to Twitter and posted "My boy" along with a cactus emoji, reports femalefirst.co.uk.

Although he deleted that tweet, Jeremy went on to share an image of his native Toronto's CN Tower on Instagram and tagged Bieber in it, with fans believing he was making a reference to the size of his son's manhood.

He then took a picture of himself beside the tower, and once again tagged Bieber in it.

Last year, the "Baby" hitmaker threatened to take legal action after three full frontal nude photographs of him taken while he was on holiday with Jayde Pierce in Bora Bora, surfaced online. But his father wasn't very concerned back then.

He took to Twitter to praise the “Where are u now” hitmaker's manhood, tweeting: "Justin Bieber what do you feed that thing. Proud daddy.”