snicklecruckers

An expression of frustration or pain when adult four letter words would not be appropriate, i.e., when a child is present. Generally said as an all caps exclamation, even requiring multiple exclamation points at times.

Mommy, mommy, daddy yelled, “SNICKLECRUCKERS,” when I hit his thumb with the hammer!
“Oh, SNICKLECRUCKERS, I dropped the cake!”