(simile) Behaving in a foolish, frivolous, or uncomprehending manner as a ruse for concealing clever deeds or deeper intentions.

(US, slang) Demented or crazy.

(slang, simile) Utterly senseless or insane.

(Nigeria, slang) moonshine; illicit alcohol

(US, colloquial, simile) Completely crazy; insane.

A yellow-brown species of ant, Anoplolepis gracilipes, which forms large colonies and is an invasive pest in many countries.

plural of yellow crazy ant

(simile, slang, vulgar) Thoroughly crazy.

Third-person singular simple present indicative form of drive someone crazy

simple past tense of drive someone crazy