take leave of your sensestake leave of (your) senses
to become crazy.
My friends wondered if I had taken leave of my senses.
idiomtake leave of your sensesold-fashioned to start to behave in an unreasonable or silly way:Hawkins stared at him. "Do you know what you're saying? You've taken leave of your senses!"
take leave of (one's) senses
To do something strange or outlandish. Have you taken leave of your senses? You can't just give up surgery to move upstate and paint landscapes!
take leave of your senses
go mad.
take ˌleave of your ˈsenses
(informal, humorous) behave as if you are mad: You want €25 000 for it? Have you taken leave of your senses?I think my aunt has taken leave of her senses. She wants to make a will leaving all her money to a dogs’ home.