Not only did the 16-year-old bungee jump off New Zealand's Auckland Bridge today, he risked messing up his hair and everything!
The Beeb's mum and bodyguard joined him in the jump.
"Justin thought it was awesome his mum was jumping," a source tells E! Online. "She did great. She got nervous at the edge, but then went for it....It was actually Justin's bodyguard who was the most scared to jump of the three of them."
Justin looks calm as a cucumber as he swan dives off the bridge's edge... but check out the girly scream that comes out of him as he's plummeting towards the water! (Though it could be the shriek of a concerned fan-girl!)
Have a look at the clip and see if you can see that Beebtastic hair move an inch...