Plantar Asciitis Share definition Flag The pain associated by planting one's ass in one place for too long. "I need to take a break. If I stay at my desk one more minute, I'm gonna get Plantar Asciitis." Plantar Asciitis by HooverLiketheDam June 4, 2015 0 0 Get merch Get the Plantar Asciitis mug. Buy Now — $32.95 See more merch