A mystery Instagram account is only following people named "Paul Williams"

A 19-year-old named Paul Williams discovered someone named "LisaJames419419" had started following him on Instagram. He idly checked her account and found ... she was following dozens and dozens of other people named Paul Williams. And only following people named Paul Williams! (Or ones with that name as a stem, as with "Williamsen".)

A bot, right? Except the original Williams messaged "LisaJames419419" and the account blocked him a few minutes later, which seems like unbotlike, human behavior.

Buzzfeed reports on the story and the theories that are now raging as to what the heck is going on, including:

looking for the father of her child

looking for a long-lost relative

stalking someone

FBI agent

"Lisa is the Terminator sent back in time to kill all Paul Williams(es)."

The actual photo used in the "LisaJames419419" account is the adult film star Briana Lee, "whose photos are widely used for catfishing and scamming online."