The Hollywood stars appeared in a hilarious video for club sponsors Vista Print.
In a video call with his fellow owner, McElhenney reveals that the club have no more merchandise to sell because of the insane demand for shirts and hats.
To get over the issue, he turned to their sponsors to print more, resulting in a baseball cap with a Wrexham hat printed on it. Then the It's Always Sunny in Philadelphia star unveiled a Wrexham jersey printed on a white t-shirt.