Had the SO try prostate massage on me for the first time while sucking and stroking. She got about two knuckles deep on her pinky. She said I was pulling her in that far but it wasn't conscious. I've done some external stimulation with a vibrator before while masturbating and had a hell of an ejaculation, but I think this was a little distracting as it felt like I needed to take a shit.
Any suggestions on technique that would make it enjoyable? Maybe just need practice?