He breathed heavily a couple of times and opened his eyes. With his face twisted in disgust, he studied the vomit, and it did absolutely not look like it was supposed to. Didn't look at all like stomach content. It was more like a lump and reminded him most of all of an organ. He turned his head away from the wall, focused on the lump and gave a loud gasp when he realised what it was. Without any specialized knowledge on the field, he was not a moment in doubt. On the floor, between the shoes, was a fresh, red heart.
