A generic phrase used in response to a question. The intonations of which this phase is said will assert the feelings of the person replying. If said happily, then the person is having a good day. If said sadly, then the person is having a day derived from the first word of the phrase. May also be used as a greeting or an explicative.
Origins believed to have come from in or near the vicinity of San Antonio, Texas.

When you eat dirt for the first time and leave your family to build a shack in the woods

A greeting, primarily used in western states, expressing shock and amazement in association with the unexpected arrival of a former lover or spouse.