1. To cause the whole thing to come crashing down
2. To do something so stupid that it completely ends a cycle of action or cause.
Soldier #1: "So how'd the rebellion
Soldier #2: "They found us, so it didn't go very well"
Soldier #1: "So what did ya do?"
Soldier #2: "I ran out screaming, but I dropped my papers and battle plans, so they might have an advantage."
Soldier #1: "Jesus
, why don't you just Give the One Ring to Sauron?!"