Quoting
jk
WHOA!!! Time out. You argued she could not have seen in your truck but she knew you had an erection? As to your argument of the exercise causing erections; BS. When is the last time you saw a bunch of guys getting erections while doing their P90X exercises? Football players at conditioning training? Runners? Cyclists? If they are getting erections, I would suggest being very cautious if you shower afterwards as it isn't the exercises that are causing the erections.
beyond that, if she did see you were in a turgid state, which you admitted to, it clearly defies your argument that she never was in a position to see you and given the closeness of the vehicles (both admitted by you and the victim), there is no possibility you would not have realized there was a person beside your truck.
Sorry but regardless of anything else, your own statements have proven your guilt.