split parsonality

Where someone acts arrogantly/annoyingly "pious 'n' preachy" ("I'm as honorable as a parson!") when publicly interacting with others, but is in reality a totally selfish/dishonest jerk in his private actions.

I somehow can never develop much respect for some highfalutin nose-in-the-air who claims to be a religious fanatic, but who also cannot appropriately handle even a simple moral-question situation --- talk about a split parsonality!