A flaw in the movie

Rating: 2/10 (15 May 2016)

Being an avid Tarantino fan, this movie was a sad disappointment for me. It was far too slow with a preponderance of dialogue as compared to action. Also the violence seemed to be far too gratuitous, even for Tarantino.
Finally what really spoiled the movie for me was the obvious, suspension of disbelief in that the general's son who was stripped naked by Major Warren (Samuel L. Jackson)and then force-marched out into the snow, knew he was doomed to die because the Major Warren character confirmed as much.
Therefore, in true Tarantino style, why would the general's son not bite off Major Warren's dick instead of sucking it? Or have I been watching too many Tarantino movies?