English: “All flesh” — R’ Yochanan said: This teaches that they caused animals to mate with wild beasts and wild beasts with animals, and everything with man and man with everything.
On the daf / in context: The inclusive language “kol basar” is taken to mean that the corruption of “way” extended even to inter-species mating, a hallmark of the generation’s complete moral collapse.
Type of Learning
Custom (diyuk from the broad term “all flesh”).
What Is Learned
The generation of the Flood corrupted the natural order itself by forcing unnatural matings across species and with humankind.