Jason pushed the back door open with his elbow. He was dragging a heavy black plastic sack behind him. Thud, thud, thud. The bag thumped each stair Jason descended. Thud, thud, drip, drip, drip. The bag had gotten caught on a nail and a foul, odorous juice poured out, splashing Jason's leg. "Ew...disgusting!" Jason shouted as he adjusted the bag. He walked out to the alley and dumped the bag in a large plastic container, closing the lid behind him as he left, still muttering about his pants.
What is Jason doing?