girl: Am I getting fat?
guy: (Without a moment's hesitation) Of course not, In fact I think you have lost a bit of weight recently.
girl: Wow that girl sure is pretty.
guy: Oh no.. Not as pretty as you. (While secretly thinking woo hoo What a girl!)
teacher: Where is your homework?
student: My cow ate it.
Before I penned this down I thought of all the lies I cooked up over this week. Almost all of them had the same effect. They just made people happy or more comfortable about you or themselves. Take the teacher example: Now find me one person who thinks that's a worse response than telling the teacher I was too lazy to do it or that I was too busy having fun to be worried by mundane things like my homework. The thing about lies is as long as they dont hurt anybody they are perfectly acceptable.
So...Keep lying. It makes the world a better place.
Disclaimer: Dont refresh your memory to see when I was lying and when I was not. If what I said was something nice I probably was lying ;)