Yes, even after all the years I have been with my husband, he will still walk in and scare the sh*t out of me, laugh at my startle, and then get yelled at for startling me. He should know better than to do that after all these years, and the knowledge that I have PTSD and bad hearing loss. But he forgets. Every time. He is a scientist, so he is very smart in math and all hard sciences, but flatlines on common sense.