Trismegistus I didn't βletβ my father to catch me, he usually storms in my room without knocking.
And being fully aware of the situation in your home and your father's behavior, you jerked off so carelessly that you got caught a second time???
BTW, I come from a country where almost no one knocks when entering their child's room and I don't know of a situation where anyone has been caught masturbating even once...