Experiment

Pete came upstairs to talk to Dad one evening last week, just before bed:

Pete: Mom and I are doing a science experiment!

Dad: Oh, what is it?

Pete: We're putting a hot dog bun in a container with some water to see if any mold grows on it.

Dad: Ooh, that will be a fun experiment to do again.

Pete: Again?

Dad: Yeah, I noticed that Mom did that experiment in the pantry last week.