A person that pretends to be loyal and loving to get what they want at the moment. After they do they turn cold and calculated. They use your insecurities to hurt you. Then pretend that their actions had nothing to do with you. They seem so kind but they're really sneaky slime.
Her: Let's go hiking babe
Him: I'm so busy this week babe
His Facebook story: Him and a different woman hiking
Her: Wow who is she? I thought you were busy. You just didn't want to take me you BIG SNEAK
When waiting to turn left at a red light, once the light turns green but without an arrow, slam the accelerator down, make your turn and beat the car who should have proceeded straight. Effectively ignoring the right of way.