2. someone who is paid to sit in a comedy show and laugh at every joke the comedian says, prompting others to laugh
2. That guy next to me, the one who keeps laughing, yeah, I think he's a plant.
2: N. A green organism, often leafy, popular for its ability to turn poisonous gasses into the popular hallucinagen, oxygen. These blobs of cells are well known for causing rashes, indegestion, death, and putting holes through the feet of unwary hikers. They are to be watched carefully for signs of rebellion.