What is Lose Your Marbles?
1.
Lose your marbles = lose one's mind, insanity, person who does not have common sense/wits.
"Lose your marbles"
I knew she'd eventually lose her marbles = I knew she'd eventually lose her common sense/rational mind
Have you lost your marbles?. Means the same as "Have you lost your mind"?
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Random Words:
1.
failure, collapse, inability to perform, freak accident, incopetency
I have found this word used first time while looking at comments ..