A London, Ont., man is facing charges after allegedly driving without wearing any pants on Highway 401.

Provincial police say the driver of a tractor-trailer called to complain about a man in a Honda pickup truck exposing himself while driving near Graham Road in Elgin County on Wednesday. 

Chatham-Kent OPP tracked down the pickup near the Scane Side Road in the Ridgetown area.

The driver has been charged with committing an indecent act in a public place, careless driving, and driving without a validated permit and insurance card.