Sometimes honesty is just wrong.

For example:
 The sex is bad. You relapse with an old fling, but this time it’s terrible. She says, “That was fantastic.” You say, “Sure was!”

The truth changes the past. You’re dating a friend of an ex-girlfriend. When your ex asks, “Were you always into her?” the answer – always – is no. Someone will die angry. Your old uncle’s on his deathbed and doesn’t know about your husband. He thinks you have a wife, kids and a 
Rottweiler. Just let him have that.

You can be a celebrity. You’re in a bar, and Van Coke Kartel just performed nearby. An attractive women mistakes you for Francois Van Coke and asks you to sign her cleavage. You sign that cleavage.