Hollywood action hero Arnold Schwarzenegger has admitted that "some of us had to change our pants" after an elephant charged a vehicle he was in while on safari in South Africa.The former California governor was on a safari at Pilanesberg Game Reserve in North West on Sunday, when he had the close encounter.Schwarzenegger, who was in South Africa for the Arnold Classic Africa body builders show, was relaxing in the park before flying home to Los Angeles on Tuesday night.The encounter - videoed by his assistant - has garnered thousands of views on social media, across the globe, with Schwarzenegger taking to Instagram where he wrote: "I couldn't have written this safari encounter better if it was a movie script."The charge began when the elephant attempted to head-butt the safari vehicle.Schwarzenegger is heard saying: "He's going to charge us."With some serious acceleration by the guide, those in the vehicle can be heard shouting expletives, before bursting into laughter after they realised that they had managed to escape.Wayne Price, Arnold Classic Africa head, who was on another vehicle in the park, said Schwarzenegger "loves elephants with protection of the species close to his heart".Schwarzenegger, who posted on Instagram and Twitter, did not reveal who it was who had to "change (their) pants".Will Schwarzenegger be back?That's a definite yes, according to Price...