Waiting all day long can get you pent up in so many ways. In this case, I'd held off masturbating as I left for work, and I held off peeing until I'd gotten home. Sitting on my bed, I was overwhelmed by how good it felt to grind against my own hand whilst holding back the flood. . . and that's where it started. A hand down my pants, and a vibrator against my clit later and I'm launching off the bed, running to the bathroom, and soaking my grey panties!