So i completely pooped my diaper

Once again i was out running errands and I was suddenly overcome with the stong urge to poop, it came out of nowhere and completely took control of my bowels and the next thing i knew i was filling my diaper with a huge lead of poop with absolutely no warning, and it made me freeze in my tracks. I just stood there as this massive load of poop forces its way out of me and straight into my diaper followed immediately by a flood of pee. Normally i have some sense of advanced warning or knowledge that I'm going to need to poop but this cane right out of left field. One second I'm a normal guy out running some errands and the next second I'm filling my diaper like a toddler. Anyone standing nearby would've seen the look of shock on my face and been able to see the giant bulge form in the seat of my diaper and been able to smell what had just happened.