Rob McElhenney Seemingly Teases 'Abbott Elementary' & 'It's Always Sunny in Philadelphia' Crossover!

Rob McElhenney is seemingly teasing a huge TV crossover!

The 47-year-old actor shared a photo of his It’s Always Sunny in Philadelphia co-stars hanging out with the stars of Abbott Elementary, seemingly confirming the ongoing rumors of a forthcoming crossover.

Back in July, creator Quinta Brunson teased the crossover episode at San Diego Comic-Con, saying: “We will be doing an interesting crossover this season but I’m not gonna tell you with who or what or when, but it will be exciting...