If, when approaching a stop light and it suddenly turns green, I say "thank you!" as I drive under it. Weird? Yes.....buts it's working!!!!
I talk to my tools. Got in the habit when I was on active duty.
"Behave or see the bottom of the Pacific, baby."
My strikers often thought I was speaking to them. Of course I wasn't, that would be again the USN rules. Never ever broke USN rules. But I can cuss out my tools, no problem. Innocent bystanders didn't understand this, and sometimes not so innocent bystanders did understand this.
I only watch vampire shows at night.
While playing video game stealth missions, I'm also as silent as possible IRL.
I publically thank pest-controlling species like orb weaver spiders (they're large so they're easy to spot) and lizards outside my house. I consider having a large (and therefore well-fed) spider on the premise to be a sign of good luck.
I semi-sarcastically say "after you, your majesty" or "apologies, your magesty" when the local Canada geese cross the street and otherwise get in the way. I doubt they understand the sentiment, but I know for a fact that they embody it.
I've been trying to think of any weird or superstitious things I do, but I've been unsuccessful in the attempt.
I guess the weirdest thing I do is to watch YouTube for 12 or 14 hours a day. I just can't seem to drag myself away!
++Weird.