Very Strange, But Maybe Not

My discount card for the local grocery store is one Todd set up using his work phone number. I can never find my card so when I want to use it, I just rattle off that phone number and the cashier punches it in and wha-la, instant discount. The other day I had the strangest thing happen. I had been in the store not a week earlier and spouted off the phone number as usual, but this day I could not remember it. I tried several numbers but they were all wrong. I finally told the cashier to forget it, I couldn't remember it. I left the store befuddled. I have probably repeated this number to a cashier once a week or so for 6 or 7 years, and within the span of a few days I had totally forgotten it. I never could remember it. I finally realized that it was probably still stored in my phone, and it was. As I read the number, it didn't have the quick feel of remembrance I expected. I had to say the number over several times to myself before it seemed to stick. It didn't particularly bother me, it was just very weird. I decided it must be my psyche's way of saying it is time to release that from my memory.