Movie tough-guy Jason Statham was left red-faced filming a sex scene in a shopping mall - his fellow actors took photos of his bare buttocks.

The Transporter 4 actor had to strip for a saucy scene for Crank 2: High Voltage in front of dozens of extras playing passers-by.

But the British star was in for an embarrassing surprise - when the bit-part actors decided to capture the moment on their cell phones.

Statham tells Ocean Drive magazine, "Trying to do an aggressive sex scene is quite difficult. Especially in a public place with a crowd of screaming extras with their little camera phones going click-click, taking pictures of your pasty white ass. I've had my fair share of bedroom antics in films, but they were a little more private."