A This theoretical phenomenon happens when a superior (teacher, boss , project leader) gives you a task and once the task is completed you show said superior what you have completed. The fact that now the superior is observering causes a cosmic shit in the fabric of space and time causing the completed no matter how tested or functional it was before, it will fail in any random and unexpected way. This phenomenon has be observed by many itelectuals and has been called many things. It has even been referenced in movies and TV shows alike and is normally a source of comedy.
Worker: "the robot is fully working come see"

Boss comes to see, everything unexpectedly and impossibly fails

Worker "shit damn Crosbie effect"

Student: hey my project is finally done after a week of work

Teacher enters room : hey everything done yet?
Student : no fuck Crosbie effect

Everything inexplicably falls apart
by nanobug64nan January 19, 2018
Get the Crosbie Effect mug.