Inside the ever-changing world of high-volume drug smuggling, the development of innovative sneak-tactics is in constant demand. This is perhaps one of the most interesting aspects of the black-market drug trade: waiting to see what methods the cartels will use next in an attempt to foil the war dogs of United States drug enforcement.

In fact, a Mexican drug cartel’s latest marijuana trafficking scheme was nothing short of genius; at least until enthusiastic drug agents came along and put the kibosh on the fruit of their labors. Earlier last week, US Customs and Border Protection discovered a shipment of what appeared to be watermelons in the back of a suspicious big rig, but upon further inspection, officers soon discovered the fruit was actually millions of dollars worth of weed, which had been airbrushed to look like watermelons.

Reports indicate that that the semi hauling the ganja had already made it passed the initial border checkpoint and was nearly 20 miles up the road before a secondary unit swooped in and demanded a search. When drug agents opened the back of the trailer, all they could see was a hefty load of watermelons; however, there was a clever illusion at work. Using x-ray imaging, agents found a substantial amount of marijuana packed inside a giant heap of bogus melons.

"These criminals use a lot of unique ways to try to conceal their narcotics," Tucson CBP Agent Bryan Flowers told Fox News. "We've seen individuals use false compartments in the seats and gas tanks. We've also found marijuana in tractor trailers here before."

Of course, this incident was not the first time the cartels turned to fruity commodities to smuggle marijuana into profitable territory. In 2010, drug agents discovered nearly 10,000 pounds of marijuana being transported inside a load of actual watermelons. We suppose hiring painters is easier than tracking down qualified fruit carvers.

Authorities in this case did not specify what led them to conduct a search of the tractor-trailer, but they did say the driver is still in custody.

Mike Adams writes for stoners and smut enthusiasts in HIGH TIMES, Playboy’s The Smoking Jacket and Hustler Magazine. You can follow him on Twitter @adamssoup and on Facebook/mikeadams73.