I pumped my clit until it was swollen and put an elastic band over it, inserted a foley catheter and inflated the 30ml retention balloon in my bladder, and screwed a penis plug into my cervix, then attached kegel weights to all three. Unfortunately, while I continued setting up, the weight on my cervix pulled the screw plug right out of my cervix and bounced across the floor! It was a very startling sensation, to have it suddenly pulled free. Even without that third weight, though, the feelings were very intense, and I experimented with whether I could cum just from letting them sway and tug at my clit and bladder.