Being a science teacher is both fun and tough. Since science was your all-time favorite subject growing up, it was fun, but sometimes the kids changed that. Sometimes, they wouldn't stop talking, wouldn't listen, or wouldn't do their work, which over time became frustrating.

Today, you were teaching the kids chemistry and what happens when you combine chemicals. You let the kids go to their small lab stations to combine different chemicals, according to a chart you handed out. They were doing well.

About 5 minutes before the bell, you told the kids to pack up to get ready to leave and that you'l handle cleaning the stations.

As the bell rang, kids left the room. One kid was grabbing their stuff to leave and, accidentally, bumped a flask as they walked away. The flask tipped onto the ground, spilling chemicals. You sighed. Since you had no class for the next period, you called the custodian to come clean up the chemicals. The custodian was quite gruff and always seemed annoyed or tired.

Once the late bell rang, the custodian showed up. He sighed at the sight of the spill. "These kids need to learn to be careful," he huffed, his voice gruff as he held his mop.