More details at Drudge Report on John Kerry’s ski vacation, during which he called a Secret Service agent a son of a b*tch.

Dem presidential candidate John Kerry called his secret service agent a “son of a b*tch” after the agent inadvertently moved into his path during a ski mishap in Idaho, sending Kerry falling into the snow.

When asked a moment later about the incident by a reporter on the ski run, Kerry said sharply, “I don’t fall down,” the “son of a b*itch knocked me over.”

The Secret Service agent in question has complained about Kerry’s treatment, top sources tell the DRUDGE REPORT.

Last month, Kerry began receiving Secret Service protection.

“Obviously, the complications and burden of being monitored 24-hours a day is not just an a simple inconvenience,” a government source explained Friday. “But Senator Kerry should understand agents are working for his safety and well-being.”

On Friday, Kerry, his snowboard strapped to his back, hiked past 9,000 feet on Durrance Peak, then snowboarded down the mountain, taking repeated tumbles. Reporters counted six falls, although Kerry was out of sight for part of the descent.