I used to lie to people all the time about stuff just so they would shut up, such as them saying "hey did you see that movie that came out yesterday" and i would think to myself, if i answer yes it was good and just nod and laugh about scenes they bring up and say they are funny then this topic should last a good 5-10 seconds, or if I say no i havnt seen it and i dont plan to (the truth) then they would most likely feel inclined to tell me all about the movie and tell me loads of reasons why i should see it, taking around 30 seconds to a minute of just them talking, then i would think "less listening" and tell them i had seen it and that had settled that boring topic in a few seconds...

I dont do this anymore since now i see that lying like that is pointless, maybe they actually had a good reason why i should watch the movie, and if i had heard them through i could have had a lifechanging experience...
not everyone realizes this so yes, there are many liars in this world just shooting off lies to beging or end topics for no real reason whatsoever, you dont have to read self help books to know how to do this...