I once promised a friend I'd pick her up at the airport. Her plane got in at 5:30, but she didn't clarify for me that she meant AM, not PM. So I got my acting together and started crying and told her my car got stolen (from an attended parking garage) and I couldn't come get her. Later on that week, she sees me cruisin around campus in my car, and I told yet another lie that the cops found it and dropped it off to me (dose that even happen?). One of my other friends questioned why I didn't have to go to a lot to pick it up, so I then said "yeah, my insurance covers the drop off fee too." LOL, so to answer the question of why people lie and stuff, once you start, you gotta keep going. And really, I just didn't feel lke drivin to the airport at 5AM! It's like, an hour away from campus.
P.S. No need to worry, my car is perfectly fine!