Like it or not, the annual celebration of gluttony and waste known as Wing Bowl is as much a part of this city’s fabric as Legionnaires Disease and the MOVE bombing. But thanks to the enterprising folks at NoLibs watering hole the Abbaye and women of Philly Roller Girls, we now have a slightly less barf-tacular eating competition in the Vegan Wing Bowl, which is happening Saturday. Though there’s no meat and the “wings,” which are actually pieces of crispy fried seitan tossed in a fiery buffalo-style sauce, are responsibly portioned out for competitors, the eating contest is by no means meant to be a protest against the local stop on the nation’s competitive eating circuit. The organizers prefer to think of it as an all-embracing, jovial contest that’s open to vegetarians, vegans and carnivores alike. Registration begins at 3 p.m. There’s a $20 fee, but for onlookers it’s free. The competition gets underway at 4 p.m. sharp.