Green’s Dictionary of Slang

tambourine man n.

[? the Bob Dylan song ‘Mr Tambourine Man’ (1964)]

(US drugs) a drug dealer.

[US]E.E. Landy Underground Dict. (1972).
D. Hilton ‘Cannabinoids and Chromosomes’ 7 Aug. on OpenDemocracy.net 🌐 Now, Beat Lutz (the THC tambourine man at the Max Planck Institute of Psychiatry in Munich) and his crew have discovered that the brain’s natural version of THC can rid our minds of bad memories.