Even if Bob Dylan hadn't introduced The Beatles to marijuana at New York's Delmonico Hotel, the boys would have lit up soon enough. From that August 1964 night onward, "let's have a laugh" quickly became their code phrase for "let's have a toke." And laugh they did. At least until they began getting busted for smoking that wicked weed. It turns out that Paul, not the controversial John, was the most prolific pot puffer of all, leading the band in number of arrests.