in your right mind
US /ɪn jʊər raɪt maɪnd/
UK /ɪn jʊər raɪt maɪnd/

1.
sane and thinking clearly; having good judgment
:
•
No one in their right mind would agree to such a risky plan.
•
Are you in your right mind to suggest such a thing?
sane and thinking clearly; having good judgment