Jack Black loves a good photobomb.
But there's nothing the comic actor finds more satisfying than doing it to a fellow celebrity.
And Black's photobombing an innocent Zac Efron was just too good an opportunity to pass up!
At a press conference for their flick, the animated The Lorax, Jack gave the heartthrob a shot to remember when he inserted his smirking mug into the backdrop of a picture featuring a smiling Efron and then posted it on his Facebook page yesterday.
"Yes, Zac Efron. I will photobomb you any chance I get!" quipped Black.
You're move, Efron.