יש ל־ ג׳וק בראש

Hebrew

Etymology

Literally "there is [= to have] a cockroach in one's head".

Phrase

יש ל־ ג׳וק בראש • (yesh l- júk ba-rosh)

1. (idiomatic, colloquial) to go crazy

   יש לו ג׳וק בראש. ― Yesh lo júk ba-rosh. ― He's gone crazy.