Gish-gosh: exclamation, informal; used to express surprise or give emphasis; informally used as a euphemism for God; the word "gish" is used by Jewish people as a substitute for "gosh", which is a substitute for "God".
In Utah, the mormons say "Oh my heck!" - but in Oregon, the hip people say, "Oh my gish-gosh!"
by billphoto May 31, 2009
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