Wofano Wotanto
Hero
Oddly enough, 9th grade would be the last time I heard someone openly boasting about memorizing the MM - so 1980-ish. Much more recently, I've sat at organized play tables in 4e where one or more of the other players seemed remarkably well-informed about monster stats, as well as "coincidentally" finding hidden loot and "guessing" plot details just a bit in advance of everyone else. They were much more subtle about it than some teen in the Seventies, but it still earned some dubious looks. The only guy I ever saw get the boot for that kind of nonsense got caught out on video playing the same event at different store a day before he sat down at ours - and even then I think it was more because he'd shop at the competition and just use our FLGS for OP events, which made the store owner a real fan of his.Who the heck are you playing with? I haven't experienced this player behavior since middle school.
I don't understand that particular cheating mentality, but it certainly exists.