A "perfect storm"
When everything you do makes you want to poop, and you end up in a messy, smelly, unforgettable mess.
'I drank 10 coffees, ate a taco bell, and smoked 10 cigarettes. That was a perfect storm!'
'I drank, I ate, I walked, and I pooped everywhere. A perfect storm.'
'I partied, I ate, and I ran. That was a perfect storm.'