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1.
1.The moment in time where something bad is happening behind a window and you can't do anything to stop it.

2. Watching something bad happening that can not be interfered with.

3.Helplessness
Guy 1: I watched her die before my eyes
Guy 2:Why didn't you do anything she could have been saved
Guy 1: It was a Deadspace Moment, I couldn't do anything, I'm sorry.
by Chunkypandas March 27, 2011