carry two faces under one hood

To be duplicitous; to habitually present a different version of oneself at different times, especially in the presence of different people. Watch out with Terri—she carries two faces under one hood. She always giving me a big hug when she sees me, but I heard that she's been insulting me behind my back lately. It's not that politicians carry two faces under one hood that is so surprising, but the fact that so many people accept such phony façades as the truth. I think Kim carries two faces under one hood—she acts nice to me, but I heard that she's also the one who started that nasty rumor about me!