According to Rob McElhenney’s alleged former social media manager, “White people steal all the time, and he isn’t a good person.” She must have just watched “A Very Sunny Christmas” and learned about that “South Philly tradition.”

The highly anticipated Abbott Elementary episode featuring the characters of It’s Always Sunny in Philadelphia is right around the corner, and while most fans of both the show and Philadelphia itself are ecstatic to see McElhenney and his crew collab with the other most popular sitcom about Philly in the first part of a two-episode event, one of the Always Sunny star and creator’s former employees isn’t quite as thrilled.

Brittani Warrick is a digital strategist who previously worked for McElhenney as a social media manager on a few of his projects, including Always Sunny and Welcome to Wrexham, and, in an accusatory tweet posted yesterday, she made her...