Tattoo Assassins

[Uroboros]

On the Tattoo Assassins website that Max Radical linked to, a game tester for the game mentions the diarrhea move:

I remember that there was a very damaging move: up, right, up, right, up, right, up, right while holding block, then press punch. Your character would then turn around and fire acidic diarrhea at your opponent. If you got hit by it, say good-bye to 25% of your health.

If you get that to work, throw up a screenshot for us!