english
1
general::
Phrase(s): go bananas Sl. to go mildly crazy. • Sorry, I just went bananas for a minute. • I thought he was going to go bananas.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Act crazy, as in When it comes to animal rights, some people go bananas. According to the lexicographer J.E. Lighter, this expression may allude to the similar GO APE, in that apes and other primates are closely associated with eating bananas. [Slang; second half of 1900s]
American Heritage Idioms