I'm sorry to keep tweeting about it, but I'm kinda fascinated now. Someone on the Flyers' socials team must have suggested giving Gritty a tattoo, and instead of 'Gritty,' they misspelled it as 'Girthy.' Comcast must've given the green light. They probably had email chains about this.
I'm picturing a board meeting with a grand presentation that asks, "What should Gritty do today?" And they go around the table: "Eat a cheesesteak :-)" "Hula hoop at Love Park" "Get a big stomach tattoo that says GIRTHY" "Take a drive down the shore."