The devil arrives at your door on January 1st 2018. He offers you two choices.
1. From this day forth, you may watch any wrestling that occurs. But only once. And you may watch any wrestling prior to this date - once - as long as you have not previously watched it.
(The Devil is telling you that you cannot rewatch any wrestling ever again).
2. From this day forth, you are only allowed to watch wrestling you have seen previously. You will not see any wrestling from the year 2018, or subsequent years until you die. In terms of wrestling prior to 2018, you may only rewatch footage you have already seen. On the plus side, you can watch this footage as often as you like.
(The Devil is telling you that you may only rewatch wrestling from this point forward).