Author's Note

The Spy of the Tiger pointed to the parallel universe in question!

the lid was stuck was because it came from a parallel universe where everything is the same except jars are left hand threaded?

"Raven? Come here for a moment."

A shudder ran down Raven Inkwell's spine. She peeked through the door. "Yes, Princess?"

"The pickle jar," Celestia held up the now-empty jar, her gaze focused on its lid. "Why is the threading left-hoofed?"

Raven held back her grimace. It was a mistake to open the jar for the Princess yesterday. It was really nothing major in her mind at the time, but to so nonchalantly open a jar that used the threading of her home universe?

"Answer the question, Raven."

"Uhhhhh, manufacturer defect!" Raven chirped. She spun around, hurrying back into the hallway. "I will contact the manufacturer at once and ensure that this does not ha--"

"But this is not a jar I purchased myself. This comes from your stash, Raven."

"Okay, first of all, wow, privacy violation much?" Raven kicked the door open again. "Second of all, that implies nothing about me as a pony."

"You're from a parallel universe, aren't you?" Celestia squinted her eyes. "You and your parallel universe pickle jars with reversed threading."

Raven Inkwell stood silently, her jaw agape.

"Excellent, excellent!" Celestia clapped her hooves together. "Tell me, is there a Celestia there, too? I do love talking to myself."

"Uh--"