Last night I did have very strage dream again....The only thing I remember from the dream was that someone said...Sub...and I did understand they meant submarine...but what I did see was a man having a black pipeline from where air did blew out and he placed the pipline in his nose so his face was like a baloon?? and I turned my head to look on another direction and I saw a man having a tube from where air was blowing into his mouth so his mouth was widh-open...(what is this)??