Oh I agree. I was being facetious. But the reaction of a parent when they came across it was just as horrified as a parent today finding the history on the cache. When I was 18, my dad found a Playgirl in my car - I’d bought it just because I could - and you’d have thought he found a dead body stuffed in the trunk.
Ah, also meant to add, no one I knew needed instructions on self-pleasuring or dry humpin’ as one poster so succinctly put it. Most figured it out on their own ;)