Marijuana does affect your judgment:

A New Zealand man had a novel idea when he found himself in a queue at a service station counter with no money, could he pay with marijuana instead?

Unfortunately he didn't get a chance to discover whether the attendant would accept his offer, as the person behind him in the queue was a police officer, the Dominion Post newspaper reported.

The man's attempt to buy two packets of M&Ms and a packet of potato chips to satisfy his "munchies" was caught short when he was arrested.

Bummer.