Britney's ex husband appears in an ad created by the Nova Scotia Liquor Corporation in which minor celebrities say the decision to avoid drinking and driving is a matter of common sense.
It features a host pitchman hawking a new product - a Common Sense toolbox filled with items that address excuses made by would-be drunk drivers.
The items in the kit include a car-key condom that would prevent users from turning their vehicle's ignition and an air freshener to spruce up foul-smelling taxis.
Federline jokes, "An ex wife of mine once said, 'We need to use more common sense', now we can!"