Went to bed while watching a horror movie and pissed in my jeans

I want to have a cozy evening and watch a scary horror film and what happens to me? I'm shitting my pants with fear! I'm chilling in bed and notice how my bladder is getting more and more strained, but I don't want to get up because the film is so incredibly exciting. I toss and turn until one moment I'm so frightened by a scene that a real spurt goes off. Damned! I can't hold it anymore and I'm so scared as it gradually gets worse and worse. Then I can't hold it anymore and push my loud jet of piss into my jeans until another mega puddle forms under me and it doesn't stop running out of me.