An individual or group of individuals who, publicly, go thru the motions of living a morally elevated life but who in private will manipulate their faith to justify their own untoward behavior. Practitioners of ass-holyness are not limited to clergy members of any specific religion, and often include prominent laity.
When your dog, in order to scratch his ass, drags it across the carpet with his front paws up as if he is riding a motorcycle.
"Hey man -- check out my dog - he's got a bad case of assholykisselitis (ass/holy/kiss/e/lite/is). He looks like he's riding a motorcycle across the carpet."