Big calves Share definition Flag When someone is so smart, that they show possible symptoms of Autism. They must have extra brains in their calves. You know the birth dates of every Avenger? You must have big calves. Big calves by theDudeYouNevaKnow August 11, 2022 0 0 Get merch Get the Big calves mug. Buy Now — $32.95 See more merch