

Ben and Lily were going to the zoo with their mom. They had to take the bus to get there. Ben liked the bus. He liked to look out the window and see the cars and the trees and the people. Lily did not like the bus. She thought it was too loud and too bumpy and too crowded. She worried that she would get sick on the bus.
"Mom, I don't want to go on the bus," Lily said. "Can we walk to the zoo?"
"No, sweetie, it's too far to walk. The bus will take us there faster and easier. Don't worry, you'll be fine. Just hold my hand and breathe slowly," Mom said.
But Lily still worried. She closed her eyes and tried not to think about the bus. She hoped they would get to the zoo soon.
The bus stopped at a red light. Ben saw a big truck next to them. The truck had a picture of a cow on it. Ben liked cows. He pointed at the truck and said, "Look, Lily, a cow!"
Lily opened her eyes and looked at the truck. She saw the cow, but she also saw something else. The truck had a hole in the back. And out of the hole came a lot of brown stuff. It looked like mud, but it smelled very bad. It was cow poop!
Lily screamed. "Ew, ew, ew! That's disgusting! Mom, make it go away!"
Mom looked at the truck and saw the poop. She made a face and said, "Oh, yuck! That's gross! Don't look, kids, don't look!"
But it was too late. Lily had seen enough. She felt her stomach turn and her mouth fill with spit. She leaned over and threw up on the floor of the bus.
Ben saw Lily throw up and he felt sorry for her. He also felt a little sick himself. He said, "Lily, are you okay?"
Lily nodded, but she was not okay. She was still worried. She worried that the bus would never get to the zoo. She worried that the poop truck would follow them. She worried that she would throw up again.
She wished they had walked to the zoo.
