The "Naughty Boy" is an Australian euphemism for the act of sexual intercourse. Popularized by the Australian television comedy series "Wilfred" about a woman named Sarah, her new boyfriend Adam and Sarah's dog, Wilfred. To Sarah Wilfred is nothing more than a 5 year old mixed-breed cantankerous pooch. However, Adam sees Wilfred as a man in a dog suit. They interact, watch DVD's together, eat nachos together and smoke pot together. The term probably originated when Wilfred tried to hump Sarah and she must have told him that he was a "Naughty Boy"