lying in the dark, listening to my heart beat

did you ever try to explain something to someone, but in order to explain the one thing, you have to provide all this background, and then you lose them somewhere in the background before you even get around to the actual one thing you wanted to explain, so by the time you get to that thing that you wanted to explain, they are looking at you like you're some kind of alien life form or else they have glazed over on the outside & journeyed somewhere else on the inside, and you realize they are never going to understand the one thing that you wanted to explain, so you stop talking in mid-background, and they hear that you have stopped talking, and they take the opportunity to change the subject?