Lies I have been known to tell my doctor:

Doctor: "Are you exercising and eating right?"
Me: "Oh yes!  Running and cut WAY back on the food!" (Running to catch the ice cream truck and cutting mack from one whole pizza to 1/2 a pizza)

Doctor: " How much do you drink on a weekly basis?"
Me: "Oh,  a glass of red wine here and there. "  (Every night starting at 5 sharp, here in the kitchen, there in the den, really anywhere....)