Lipstick Christian 

Someone who wears Christianity like makeup... to hide the ugly person they really are.

Did you hear Leslie preaching the gospel right after cussing Allen behind his back? Yea...She's such a Lipstick Christian.

Lipstick Christian by Big CU December 20, 2006

Lipstick Christian 

A person who uses Christianity as a facade. As skin deep as lipstick.

Also, as in "To lipstick a pig", in order to appear more pious with the least amount of effort.

Oh never mind him, he's a lipstick Christian, he only prays for fast cars and shiny women.

Lipstick Christian by WannabeU July 5, 2016