The Austronesian Comparative Dictionary

*katúk knock on the head; crazy, insane

PPh katúk knock on the head; crazy, insane

WMP
Ilokano katók crazy
Aklanon katók crazy
Cebuano katúk conk someone on the head; become stupid, slow to understand and lacking in sense (as if having been hit on the head)
Bikol katók crazy
maka-katók to go crazy