shitlupa Share definition Flag n. A faux Mexican food causing explosive gastrointestinal distress. Any item served at Taco Bell. "Ted's been in the bathroom for three hours. Does he have the swine flu?""Naw. He had a shitlupa for lunch." shitlupa by llbean27 January 9, 2010 0 0 Get merch Get the shitlupa mug. Buy Now — $32.95 See more merch