How do you deal with immature people?

That's a question I really want answers for.I have to deal with such people everyday because I live with one.I t drives me crazy and I usually react by a) yelling at the top of my lungs or b)throwing something at the wall.I know,I know...this is probably not the right way.

Let's start out by listing some features of an immature person:

a)he/she repeats what you say,just like a parrot 

b)he/she never admits he/she is wrong  even when that's clear as daylight

c)he/she sticks his/her tongue out

d)you can't have a proper conversation with him/her because he/she never listens to you opinion 

..and the list could go on and on 

I bet each and every one of us has met a person like this at least once in our life.But what about living with such a human being?How do you deal with him/her?How about if he/she is over 50?Let me know your experiences in the comments below.That would be very helpful for me.

And now,a photo of a very beautiful place in Romania.I took this photo in 2009 or 2010.I miss the days when I could travel so often.