Jared's slime mold body would, if the possibility of a mouth existed for it, have shrieked from the dissolution caused by a casual spritz from a spray bottle with a vinegar solution.
Individual cells broke down painfully if they received a heavy dose of the vinegar solution. Jared wanted to flee, but alas his body wasn't designed for rapid movement. At best he might creep a fraction of an inch per day along the tiles. The movement would, of course, have been largely illusional. His body moved by growing and expanding, at an extremely slow but steady pace. Now, from something as simple as vinegar, he felt his body melting and contracting.
"It burns!" Jared thought. It wasn't like real pain, but that didn't mean his mind didn't experience the sensation of pain.
He "saw" a large, blurry hand with a yellow sponge approach. The janitor made two casual swipes of the wall tile, grunted, and, satisfied, moved on to the task of scrubbing the toilets.
The next day, Jared's brother returned and made the horrifying discovery that his sibling, who he had left as a tiny patch of slime mold, had been scrubbed from the wall.