Yes, the translation is Kidney, not testicles, at least that's what I read on the original screenplay before we translated it, yes we thought it was weird too, but we sort of got it after we saw the show being aired.

I worked on the translation for the screenplay of this episode with NBC's dialect coach, a very good one.  My initial reaction to the wording was "huh?" like the part about the kidneys, so we had alot of discussions on the intent of the director and what kind of effects they might want on the audience.  For example,…