<Li> Counterculture of the 1960s </Li> <Li> Entheogenic use of cannabis </Li> <Li> Magu (deity) </Li> <Tr> <Td> Chemistry (show) <Ul> <Li> Cannabinoid receptors </Li> <Li> Cannabinoid receptor type 1 </Li> <Li> Cannabinoid receptor type 2 </Li> </Ul> <Ul> <Li> Cannabinoids </Li> </Ul> <Ul> <Li> 2 - AG </Li> <Li> 2 - AGE, Noladin ether </Li> <Li> AEA </Li> <Li> CBC </Li> <Li> CBL </Li> <Li> CBD </Li> <Li> CBDV </Li> <Li> CBG </Li> <Li> CBN </Li> <Li> CBV </Li> <Li> NADA </Li> <Li> THC </Li> <Li> THCV </Li> <Li> Virodhamine </Li> <Li> Synthetic cannabinoids </Li> </Ul> <Ul> <Li> AM - 2201 </Li> <Li> CP - 55940 </Li> <Li> Dimethylheptylpyran </Li> <Li> HU - 210 </Li> <Li> HU - 331 </Li> <Li> JWH - 018 </Li> <Li> JWH - 073 </Li> <Li> JWH - 133 </Li> <Li> Levonantradol </Li> <Li> SR144528 </Li> <Li> WIN 55,212 - 2 </Li> </Ul> </Td> </Tr>

Where did the term 4 20 come from