I can't speak for others, but given the situation, I wouldn't attempt a reverse rear naked choke, or guillotine, or come anywhere near your guard.
But, I cannot honestly answer that question, as I do not have real life experience in grappling someone with an erection, even as small as yours.
Why do you ask Joe, are you and TraceyKarate having another backyard fill-the-kiddie-pool-with-jello-no-clothes-barred competition? I'm still pissed you didn't invite me to the last one!
Speaking of TKDKorotti, where did you bury him? I haven't heard a peep in what seems like months...
SZ