I don't know what's worst? The fact that she bit his tongue or that her husband actually kisses that thing?

Not sure about this, check out the wife married to a man well into his 70 ies. From the photos the wife is a very good looking wonan for her age. HMMMMMM
So the wife had to use the toilet and her husband came in and stuck his toung in her mouth while she was involved with normal body functions.
Is there anyone out there that would not be anoyed by this act at that time.
Last thing I would want is to be sitting on the pot trying to pass a big one and ANYONE come in and try to make love to me at that time.