It doesn't just happen to me. This is from a former coworker circa 2012:
Please note this wasn't a Comic Book Person being weird, this is just a weirdo who comes into a comic book store and is aggressively baffing to a specialty retail employee:
I Swear I wish I was making this sh*t up...
Rando: "Do you have Baaahhbeezze? I need a weddin days Baaahhbeeze."
Me: "Sorry, we don't carry Barbie Dolls"
Rando: "You got supthin against Baaahhbeezze?"
Me: "Nope, we just don't carry them here. We are a comic book store."
Rando: "My daughtah needs Wedding Day Baaahhbeeze"
Me: "Sorry, you might try Target or Toy's R Us."
Rando:"Ugh, Do I look like a Communist?"
Me: "I'm sorry?"
Rando: "Never mind... You think Booksmith has Bahhbeeeze?"
Me: "Probably not they are a..."
He turns around and walks out the door as I speak.
I am going to start carrying a flask to work I think...