Lose your mind
Meaning: to become mentally ill, or to start behaving in a silly or strange way
Example: You just spent all that money on a pair of shoes? Have you completely lost your mind?
See also: lose your head
Π‘Π΅ΡΠΈΠ°Π»Ρ ΠΈ ΡΠΈΠ»ΡΠΌΡ Π½Π° Π°Π½Π³Π»ΠΈΠΉΡΠΊΠΎΠΌ Ρ ΡΡΠ±ΡΠΈΡΡΠ°ΠΌΠΈ. +1 ΠΠ΅ΡΡΡ Π² ΠΏΠΎΠ΄Π°ΡΠΎΠΊ π
Example: You just spent all that money on a pair of shoes? Have you completely lost your mind?
See also: lose your head