She must be bonkers to do that.
1 very enthusiastic; crazy: --
He will say that his union leaders are bonkers.
Maintaining an indigenous supply source is crucial, and relying totally on market forces is bonkers.
In a word, the process was completely and utterly pointless, and it was driving her bonkers.
The whole policy of separating responsibility from procurement is, to coin a phrase, slightly bonkers.
They may even think that they were bonkers to do so.
No one is seriously suggesting that he will go bonkers, whatever he may think of his opponents or potential opponents.
I think that that is stark staring bonkers.
Is it bonkers to ask if you made no attempt to find a rational cause to reverse your orders?