I'll lie slightly to spare someone's feelings, and/or to be diplomatic "No no, your kids bogging over our garden fence and watching my every move is totally fine, don't worry, but as for others...well, put it this way, I'm not suited to cold calling jobs. "I quite agree with you sir and I am so sorry for calling you with this rubbish" then walking out...
I could never have an affair or something really big, because A) my conscience would never let me sleep again and B) I'm a crap liar. A REALLY crap liar. Totally fecking transparent really... Man I'd be one shit criminal.
Yep...but I think it's done to big-up themselves rather than out of mischief or malice. Those blokes are probably deeply insecure and feel the need to make themselves for appealing and interesting...far worse are the REALLY nasty people, who wheedle into your life with lies and then set out to destroy you, then pile lie upon lie once they are rumbled.
My life was damn near destroyed by one of those a couple of years ago, ended up having to get the police involved and ended up on anti-depressants. That is the wrong type of lie.
But other lies I think are just hyperbole, and some just smoothing the waters.