A person, typically lacking principles and/or integrity who demonstrates duplicitous behaviour in order to climb the corporate ladder, contradicting their true thoughts/beliefs in the process.

Similar to the male cuttlefish that has been observed swimming between a female and a rival male displaying different messages to both of them. On his left half, the one the female could see, he flashed zebra-stripe courtship colours to advertise his interest. But on his right half, facing the rival male, he flashed the mottled colours of a female. As far as the competitor was concerned, he was swimming next to two females, oblivious to the act of cross-dressing/seduction going on right next to him. The cheater, meanwhile, prospers.

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life