What is another word for go wacko?
Pronunciation: [ɡˌə͡ʊ wˈakə͡ʊ] (IPA) 
"Go wacko" is an informal expression used to describe someone who is acting in an erratic, crazy or irrational way. There are numerous synonyms for this phrase, such as losing your mind, going berserk, flipping out, going haywire, losing your cool, going nuts, going bananas, going loco, and getting unhinged. All of these phrases convey the idea of someone who has lost control of their emotions and is acting in a bizarre and unpredictable manner. While these phrases can be used interchangeably, they differ slightly in tone and connotation. Depending on the context, one synonym may be more appropriate than another.
