put your head in a noose
put (one's) head in a noose
To cause or ensure the ruin of one's plans, progress, or ambitions through foolish or reckless actions or words. Jeff had a real shot at winning the election, but he put his head in a noose by making those comments. Everyone knew the idea was bad, but no one was willing to put their head in a noose and criticize it during the meeting.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
put your head in a nooseor
stick your head in a noose
If you put your head in a noose or stick your head in a noose, you deliberately do something which will put you in danger or in a difficult situation. At the risk of putting my head in a noose, I will make some predictions. I wasn't going to stick my head in a noose and speak out in the meeting. Note: A noose is a loop and knot that is tied in rope in order to hang someone.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
put your head in a noosebring about your own downfall.
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