a.k.a. The Whiskey Shits. What occurs when you eat a large quantity fast food combined with a period of consuming alcohol. Known as a "two-step" because when you think you've finished shitting your brains out you wont get two steps away from the toilet before having to back up for another round.
I shouldn't have had that steak and gravy, it's giving me a case of the Tiajuana Two-Step.
I would stay out of that bathroom for a while, somebody put the Tiajuana Two-Step on it.