Major life crises

Me: Let's do a quick review. What's a problem?
Student 1: It's, you know. A problem.
Student 2: 2+2.
Student 3: Oh, it's like when I'm making mac 'n' cheese, and don't have any butter. Though that's, like, a crisis.

On substitutes

"The sub was kind of weird. She was, like, a hippie. I kept expecting her to burn sage and, like, rub it all over the place."