The exact point in time when a plan, business, military operation, or other human endeavor falls apart and heads toward failure. The point when everything turns to shit. Opposite of "focal point" at which everything comes together.
United States military operations in Iraq passed the fecal point long ago.
Rep. Mark Foley's political career reached the fecal point when the news media published his e-mails and instant messages to Congressional pages.
My life will reach the fecal point when my parents see my grades this semester.