What is "kerflooey"

Usage examples of "kerflooey".

Yet things had not after all gone kerflooey in an instant of time: rather they had slipped into that condition by degrees, over a period of many semesters.

Or my oldest girl Barbara May that's about gone kerflooey herself, playing hooky from school.

His mind was made up, he declared: his own marriage he regarded now as having been incipiently kerflooey from the outset, and himself a perfectly okay man whose headaches and other difficulties were the effect of his wife's excessive standards, or something, he did not care what.