noun, the tomato hornworm, the larva of Manduca quinquemaculata (“tomato, n. and adj.” OED)
“I have a big picture that she painted, and it’s a wave. And it’s a big wave coming in. Sarah calls it ‘the giant tomato worm’ cause that’s what it looks like. It’s a big green wave coming, and she said it looks like a big tomato worm.”