Ok, there happened some things that could be the best, but the probably most impressive thing was when I was a boy of perhaps 10 years. I did not know exactly how girls look like from below and even didn´t have any orgasm before. I think I had already heard about it but didn´t know what it is.
One day I found besides a street the cover sheet of a porn magazine. (I remember: It was called Color Climax ) There had been three pictures: one fat woman spreading wide, one woman getting a ride on a cock, and one woman laying in a chair, with three men, one´s cock in her hand, the second in her mouth and the third man playing between her spread legs with her pussy.
With this cover I went to my bed and started caressing my penis. The feelings had been great and greater, and it finished with my first orgasm. That was really incredible. And many, many, many orgasms followed later...

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If every material thing is gone, my smile and my tears stay left.