Any fight worth getting into isn't going to boil down to Croaky's ballerina boxing or ------- satchel snatching. No, you just find the nearest object and make it your life mission to put that between the other guys skull and central nervous system.
What about when all the techniques one has learned from all the various fighting styles one has studied seem to fail in the moment? What would Bruce Lee say when all there was left to do was something that many would see as dishonorable or "dirty?" What if all there was left to do was to bite your opponent?
As with all combat situations, Bruce Lee would tell you to conform to the situation, and if necessary, bite! While it may not be the most honorable course of action, it may save your life.