Impressionable

I have found that I am very impressionable.  I pick up moods, emotions, sayings, and other things, even things like foreign accents easily and quickly.
This can be a good thing or a bad thing.  Good because it means I can learn quickly, I can adapt easily, etc., but bad because, if there are negative stimuli around, I will equally as easily and quickly pick them up, adapt, etc.
An example would be cussing.  When I'm either around someone who cusses, or watching a lot of TV or movies with swearing in them, or even just listening to music that has swear words in it, stuff like that, I feel the urge to swear more often.  I don't often cuss, but I am reminded of the movie, Dear John.  At one point, John tells Savannah that she can't have any faults, it's just not possible in his mind, to which she tells him something like, "I curse.  Constantly.  In my head there is a never-ending string of curse words."  People have asked me if I ever use cuss words, and I compare myself to this line in that movie.  I'm not kidding either lol, but it's a great way of describing of how hearing profanity affects me. 
Another example would be when I'm around people who talk a lot or have unusual ways of speaking.  I will talk more or start to use their atypical style of speech, and the list goes on.
Since I am this way, I have learned that I need to be very careful of who and what I am exposed to.  To me, monitoring what is put in is crucial to controlling what comes out.