Justin Bieber sparked concerns this week (beg10Jan11) after he posted a picture of himself sporting a fake black eye on Twitter.com.
The Baby star went online and uploaded an image of himself with a painful-looking bruise on his face, prompting fears he had suffered a nasty injury.
But the teenager revealed the picture to be a rouse - the black eye was a make-up trick for his latest guest appearance in hit TV show CSI: Crime Scene Investigation.
In a post on Twitter.com, he explained, "On set... where? Let's just say I'm back to my evil ways... Bad a**."
The singer joined the cast of the crime drama last year (10) to play troubled teen Jason MCCann and he reprises his role in a new episode scheduled to air in America on 17 February (11).