I am watching Breaking Bad on my computer, a somewhat "dated" TV series. Now I am at senson 4, the 10th episode, when Mr white is there talking to his son about his childhood memories of his father's death.
I suddenly noticed that he was using the present tense, like "there lying is my father", "he is all twisted up", "my mon, she puts me on her lap..so I can get a good look at him", "I can't even be sure that he knows who I am", etc.
My question is, is it grammatically normal or acceptable to use the present tense while telling a story (I mean, not only fairy tales, but also ture past events) in the past? Why doesn't Mr White use the past tense then? Isn't tense important in speaking daily English?
P.S. I then heard Mr White said in this very same story, "this rattling sound, like if you were shaking an empty spray-paint can——like there was nothing in him", right after using the present tense. How could that shift happen?