Rav Kahana Under the Bed

On a similar note, Rav Kahana entered and lay beneath
Rav's bed. He heard Rav chatting and laughing with his wife,
and seeing to his needs, i.e., having relations with her.

Rav Kahana:	The mouth of Abba, Rav, is like one whom has never eaten a cooked dish, i.e., his behavior was lustful.
Rav:	Kahana, you are here? Leave, as this is an undesirable mode of behavior.
Rav Kahana:	It is Torah, and I must learn.