I’ve found a hilarious, and (perhaps not surprisingly) drug-related reference to the first Dylan-Beatles meeting in 1964. Another Beatles/Bob thread; I can’t help myself.
This is actually based on documented events, when Bob allegedly brought along a bit of greenery to the Beatles hotel suite while they were in New York. The Beatles up until then were speed users from their days playing 8-hour sets in Hamburg, but had never tried smoking marijuana. Ringo was, according to legend, the first one to toke up. Then, all the Beatles indulged, including manager Brian Epstein.