Working hard to avoid having a rigid physical manifestation in one's lower parts
Although attempting it, I'm putting my mind strongly on suppressing any sort of unwelcome erotic turn-on below the waist. Via this struggle, I am determined to not succumb to any spontaneous corporeal response that may come up.
In an effort to control any unwanted bodily response, I find myself actively struggling to avoid having an involuntary arousal within at this particular instance. Through sheer willpower, I attempt to stifle any desires relating to sexual titillation.