re politeness please

hey man i was just watching a movie as a retiree ... and then you ... you didn't even have a courtesy to knock on my door ... i'm like who are your parents? teachers or preachers? did anyone teach you to knock on the door before you come? ... anyone taught you how to say please and thank you? hmm? https://www.youtube.com/watch?v=5_pBVXfReA4