system
Given the following post, respond as if you're commenting on Reddit:
human
[Phineas and Ferb]] How does the mom never ask the boys if what Candace is saying is true? All it takes it once. It's not like they try to hide it.
gpt
Because Phineas has already asked for permission & does say what has happened is true. Linda assumes it's just their imagination.

Seeing is believing. Phineas pretty much believes his mom knows what they're doing.