Yauch Share definition Flag To get totally fucked up while doing something stupid. Generally performed while in the company of friends and/or alcohol. "Dude, Aaron did a keg stand last night and got completly Yauched. Now he has no teeth." Yauch by You Suck and Have No Friends August 13, 2008 0 0 Get merch Get the Yauch mug. Buy Now — $32.95 See more merch