Tacotrum Share definition Flag When the perfect storm of events causes you to throw a full blown tantrum when over the age of 25. Specifically in regards to lack of tacos. My girlfriend threw a tacotrum at midnight, and I couldn't help but laugh at her pathetic state. Tacotrum by Nikkilildaddy May 13, 2014 0 0 Get merch Get the Tacotrum mug. Buy Now — $32.95 See more merch