A: We need a new mattress.
B: What's the matter with this one?
A: It's not comfortable.
B: It seems fine to me.
A: I toss and turn all night.
B: You should stop drinking coffee.
A: Look at these marks on my arms.
B: What are they?
A: They are bites.
B: Did the cat bite you?
A: No. The bedbugs in that mattress bit me.
B: Okay. Let's get a new mattress.