Except it's not so much "shiny" that distracts me, as it is literally anything.
There are things that I've intended to do for months. Many times, I've been on my way to do it, only to have some little thing distract me, and then completely forget about what I intended to do. Maybe a child asks me a question. Maybe I stop to take a sip of water. Maybe I just start thinking about something else in that 10 second walk. The significance of the distraction does not matter; the task immediately vacates my mind. I often even remember that I was going to do something, but I cannot remember what.