Respectful way of telling Kiss my ass when in a holy site in the august presence of religiously sensitive people and in the absence of sensible reporters, so that you could say the nasty thing faking it sound like a religiously acceptable expression.
This way you get praised for cussing someone publicly and keep your constituency intact.
The credit goes to ... Rick Gorka and his boss Mitt Romney performing in Poland for inspiring me to shove this term in here.
If only I had had the inspiration earlier, I could have saved poor Ricks job, assuming that he regularly refers to Urban Dictionary for inspiration.
Rick: " Kismass! This is a holy site! Show some respect!"