A Greyhound bus story:
A friend of mine loves to travel Greyhound, just for the adventure. No one ever bothers him. And here’s why.
He takes a 5-inch piece of rope with him. Once he gets on the bus, he puts the rope in his teeth such that 3 inches are hanging out. That makes him look unstable, and perhaps dangerously so. So everyone leaves him alone.
He’s a good guy. But also a bit weird.
Sounds like an effective strategy!