They should follow up with the five most dangerous varieties of marijuana:
1. Home Grown
2. Commercially Grown
3. Medical
4. Synthetic
5. Jenkem
From the Wiki:
Jenkem is, purportedly, a hallucinogenic inhalant created from fermented human waste.[1] In the mid-1990s, it was reported to be a popular street drug among Zambian street children.[2][3][4][5]In November 2007, anecdotal American media reports created the false impression that jenkem was a popular drug in American schools.[6][7] Several sources reported that the increase in American media coverage was based on a hoax and "on faulty Internet research."[8]
1. Fat kids
2. Skinny kids
3. Kids who climb on rocks
4. Tough kids
5. Sissy kids
6. Even kids with chicken pox