A snafu

In indexing this book I have come across the previously un-encountered word "snafu". What kind of bubble have I been living in? Maybe my whole life has been a snafu and I didn't know it.

Here are some definitions (from here and here):

a) a badly confused or ridiculously muddled situation

Synonyms: snarl, bedlam, tumult, disarray, disorder, confusion, mess; foul-up. Antonyms: order, efficiency, calm.

b) confusion or chaos regarded as the normal state

c) a situation marked by errors or confusion