Bananadine myth vaguely based on half-understood reality.

There is actually quite a lot of 5HT (serotonin) in banana peel, but it can't cross the blood-brain barrier, so smoking them, or any other kind of ingestion isn't going to work. You'd basically have to extract it into liquid form and then inject it straight through your skull directly into your brain to get some kind of a hit off it.