I like to show off. Did I really mean that?

I have seen people Show Off. Starting from daily use things like underwear to food, girlfriend to tiolet wash basins, they found something to boast about in every small thing. I came across some of my friends(not so close, you may call classmates) who start showing off on every bit of there life.
One of them was ,i think, a born showy person who started to show off to the doctor after he was born that "Listen doc i was born on this date and there is a strong chemistry for this and bla bla bla...". Another one just started showing off by just selecting a subject "I have to do this and then that and the result will be praised by Mr. Obama and #$%$#" . But really what happened to these people is the first one got kicked out of the company(Hyderabad based) beacause they judged him from the day 2 itself(they coould not judge it in the interview , thanks to his show off nature). The other one has to take over a totally different idea(Project) and work on it(he started to show off on the new topic also,unaware that it may also change).
The baseline is what do they get from these? A little bit of consideration, but what after that? Everyone of us has some important jobs to do in life, we have also some important things in life. Showing off means a Supremacy of ur thoughts,ideas and everything over others, which most of us dislike. then why to be a critcism of others dislike. A typical problem with these people is ,They dont think the importance of others. They just act spontaneously, speaking out whatever they want. But remember one thing showing off only matches with your caliberity to carry out a job and the confidence you have, to do the particular job. If you are a really good in a particular aspect, showing off doesnt matter because it brings your skill set(together with others jealousy) but there should be a limit, else you know what happens when you start walking on water-u SINK. My sincere request to my friends, please at least think before you deliver something because
THE WORLD IS A MIRROR,AND IF YOU MOCK AT THE MIRROR IT DOES THE SAME.
My perception is to keep a healthy distance from such people,beacuse you have other important works to do instead of listening to the bogus talks.