tacamahac Share definition Flag The sound of projectile vomiting coming from a person from Wisconsin. You okay there, Marge?" "Yah, I just feel like I'm gonna barf." "Oh, it sounds like the old tacamahac, yah." "Yah. tacamahac by realscribner January 26, 2011 0 0 Get merch Get the tacamahac mug. Buy Now — $32.95 See more merch