How to loose my memory ?

It might sound stupid but I was thinking about it quite a lot. I got extremely good memory especially for GOOD! anime I remember what will happen and when so I can't watch a good anime twice and have a good laugh as the first time. Is there a proven way to loose my memory? I don't care if I loose months of math study as long as I could watch for example Nichijou all over again as a anime I have never seen before.

I'm afraid I only have half a solution for you, maybe someone got something more solid. Get high before watching anime, this will cause all information gained while high only occasionally accesable, if 2-3 years pass the same anime can be seen without triggering the memories to a degree where you will know the details, if you wish to not remember bigger plot points you could get drunk, however i personally cant sit around and watch a screen when im drunk so that part is unconfirmed. How to erase already existing memory i dont know, short of doing vast amounts of amphetamines... btw, these methods are NOT advised for use by anyone that still believe they have a future xD

I didn't learn to smoke or drink in my young days :( and its really hard to start now. I wonder if there is out there something like memory destroyer program :D I know I have seen and used :D brain alternation programs which used sound to do that, but they were used to improve memory and other parts of the brain. I would like to stop (temporarily if possible) the part of brain that does memory recall.

Drinking made easy ( I cant believe im typing this up): 1 part Kahlua, 1 part vodka, 3 parts milk; the "white Russian Light", it tastes like mocca coco, yummy. 1 part tequila, 1 part strawberry rum, 3 parts rasperry sodapop; the "Loli-lure", liquid candy, with a buzz. Both of these can be enjoyed by people who dont like the taste of alcohol, personally i hate the taste...

If you've fully and successfully encoded and stored it in your long term memory, I suppose the only things you can try are maybe interference theory or motivated forgetting (suppression)

loosing memory ? well you can try hitting your head really hard :D or meditation on that but that would be no fun no fun at all :/

You have to in a sense trick your memory about not remembering something. Its hard to explain but it might backfire since you will forget the memories you want to remember.