Gateway Drug
The owner of this bike (Rasputin) said he bought it from some "Wisconsin Harley Dude" who had built it as a kid. So it's possible this chopper is thirty years old, and it's certain that its parts are- the frame is a 1957 Schwinn. The Harley dude said that this bike is what turned him into a biker. So Rasputin calls it "Gateway Drug" because it leads to harder stuff.