First time playing with prostate and I pissed on myself

I was playing with anal cavity using a prostate massager. I have never had a HFO or a Prostate orgasm so I was trying to have one for the first time. (I completely failed I think?) I was going to town it felt amazing and then what i thought was gonna be my first prostate or HFO orgasm turned out to be piss. I then cleaned up went for round two trying not to be disgusted because I pissed on myself and it’s never happened before. So going for round 2 I did the same exact thing! I pissed on myself again thinking I was about to cum! I even made sure to pee and not drink anything before. Is this a common issue for anyone else?