Mine was when I was 11 or 12 and I found a stash in my old man's cupboard, along with a bag full of hardcore mags.

The vids were;

Garage Girls
2001: A Sex Odyssey
Coming In America
Ginger Snaps
Torrid Without A Cause

The first one I actually bought when I turned 18 was Max Hardcore's 'Hardcore Schoolgirls #3'
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Never pull out of good pussy. Or bad pussy for that matter.