I used to take the bus thru Berkeley and Oakland and get hasseled by the locals - me being the only white passenger. So one day before hopping on the bus I purchased a fresh octopus tentacle from the Tokyo Fish Market and placed it in a plain brown paper bag. I got on the bus and when I felt hasseled I whipped out the tentacle I sliced off a piece, slathered wasabe all over the appendage and then gingerly consumed it. Noone on that bus ever messed with me again.
Don't ever mess with a white boy in possession of a tentacle!