I rarely lie, because I'm terrible at it. My facial expressions are way too extreme and you can practically see everything I'm thinking by just looking at my face. The only people I remember not being able to read my mind probably had some sort of social impairment.
Instead I avoid answering difficult questions properly. That usually works. I also memorized some lies about life events, not to make people think that I'm better than everybody else, but just to make sure no one knows how fucked up my past really is.