M: So, what's wrong with the drain?

W: It's clogged and the water won't go down.

M: Let me take a look. You know why? It's clogged with hair. No wonder the water won't go down.

W: Well, I guess the people who lived here before didn't clean the bathtub.

M: You're darn right.

W: What should I do now?

M: Don't worry. I got some acid here. It'll help dissolve the hair down there.

W: Ew, it stinks.

M: Now you know you have to clean your bathtub every time you use it.