ANSWER:
Meega, nala kweesta
EXPLANATION:
In the beginning of "Lilo and Stitch", Stitch speaks in his alien language, Tantalog, to make the robot throw up. Specifically, he says "Meega, nala kweesta!" which translates to "I have a burning sensation in my rear end." This causes the robot to become nauseous and eject Stitch from its mouth.
