Few years ago walking home totally bursting and nowhere to relieve myself. Longer I walked more painful it got but at same time made my penis very sensitive. The movement caused just by walking was enough get me very hard and the combination of pleasure / pain felt amazing. Moment finally got through front door I came ( only took seconds!) followed by finally being able to pee - what a relief!!
Since then often have masturbated with a full bladder as the pleasure / pain sensation is amazing, anyone else? Maybe im the only one!!!