What does the yellow joke about eating seafood porridge mean?

This is a test of your intelligence to see how you react. Because "pervert is a demon", girls invite you to dinner just to prove that they take the initiative and like you, and men should invite you to dinner. Eating seafood again is not only an initiative, but an obvious tease. If you don't believe me, try to say "OK, I'll treat you to some fish", and the relationship between them will develop qualitatively immediately.