Maine expands recall of cannabis vape cartridges after pesticide detection Yart may sound like a made up word, but it's not. Yart is actually slang for THC vape cartridges, and these devices pack high potency THC into small, flavored packs that are easy to Cannabis Vapes Inspired Cannabis Student in Possession of Three Vaping Devices Containing THC: On November 24, a school administrator at Henry E. Lackey High School became aware of a student in possession of a vaping device.