Two people are fishing in their bedroom. The woman is wearing a nightgown. The man is all decked out for fishing.
People do not fish in beds.
Why are the people fishing in a bed?
I can't believe you used that line to get me in here.
scene: a bedroom description: Two people are fishing in their bedroom. The woman is wearing a nightgown. The man is all decked out for fishing. uncanny: People do not fish in beds. entities: Fishing, Marriage. caption: I can't believe you used that line to get me in here.
A play on the word "line" --- without the fishing context, this quip refers to pickup lines, and how she can't believe a corny/lame pickup line that he used actually worked to make them romantically get together. But here, "line" refers to fishing lines --- so it appears she wasn't attracted by a pickup line, rather, she was attracted by the fishing line, which is a more specific attraction based on a somewhat niche hobby.