Californian carpenter Randy Colpek is such a fan of the beer brand Kirkland Light he’s started making his own brilliant (albeit slightly sweary and offensive) ads in homage to the brew.

The beer is wholesale grocer Costco’s own home brand and apparently retails for the very reasonable price of $US22 for 48 cans of the stuff.

Colpeck – with the help of some mates – started making the ads last year, but they’ve only now found their way onto social media and people are loving them.

For its part, Costco is apparently aware of the spots but, have thus far, distanced itself from its unwanted self-appointed spokesman and his free marketing.

According to men’s site Esquire, Colpeck regularly downs 18 cans of Kirkland’s golden throat charmer a day and when he recently hauled the cans to the recycle centre he’d exceeded the 50 kilo limit.

Check out the slightly intoxicated action below. However, B&T warns it does contain some mild potty language that some readers may deem inappropriate.