i see nothing wrong with eating a little tail once in a while...
No talking while your mouth is full.
A couple of sources of inspiration are the movies. "The World According to Garp" had a scene near the end when a woman bit off a guys penis. "Last House on the Left" also had a scene where the mother character bit off then spit out her daughters rapists penis.
While not a chewing, biting thing I think I remember that the "Godfather" book had a chapter about some goon being rubbed out by oral sex. As I remember they took him out on a boat along and had a woman to give him non-stop oral sex until he hemmoraged.
Along the same lines Viagra, Letitra and Cialias have warnings about seeking medical attention if you have a boner for more than four hours. My GF laughed when I asked her who the medical attention should be for, the boner or the bonie.
Perhaps a story line about force feeding one Viagra after another until the penis exploded. :eek: