Used as an outburst of anger or frustration, or as an exclamation. Often used to refer to weed, or the weather.
Mr. Wiggles takes a huge hit of marijuana and then is unable to hold in the smoke, coughing and choking.
He would say afterwards, "Christ on a fucking cracker!" referring to the smoke.

or

Mr. Wiggles steps outside to get a breath of fresh air.
He would say, "Christ on a fucking cracker it's cold out!"
by its_tator November 6, 2006
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