A French curse. It translates to "sacred blue", referring to the Catholic Church.

A stereotypical french curse that is actually never used by real french people. Same as the mustache and the beret - something only non-french people think is typical of the French.

French term of astonishment. a curse. translation; "sacred blue" refers to Christ's mother, Mary, often depicted in art in blue dress. the subversive tone is derived from the question of Mary's immaculate conception (i.e. her birth) and her ability to accept the Holy Spirit and birth Jesus without having ever mensturated.

(sah-cray bleuh) A very stereotypical (*cough* blame Americans) French curse, which is actually never used by the French. An English equivalent would be "oh my God!." Similarly to its English counterpart, it was once considered very offensive. "Sacré bleu" literally means "sacred blue," but it is supposed to be "sacré Dieu" (sah-cray dyeuh) or "sacred God." "Bleu" replaces "Dieu" in order to avoid the vulgarity of explicitly using the name of God (similar to saying "oh my gosh!" instead of "oh my God!"). In modern times, however, it is no longer commonly used, as it has been eclipsed by many more offensive curses.

stereotypical Fr. oath, 1869, from Fr. sacré bleu, lit. "holy blue," a euphemism for sacré Dieu (1768), "holy God."

I'm positing that it means: Heavens!

Think about it.

I also suspect it was used on some American cartoon in the sixties.

Holy cow, holy shit. Originates from the French language. Also can be found as: sacré bleu or sacrebleu.