In contrast to what one finds in the backdoor 80 years ago, I'll take my chances. I probably won't be doing the tongue tornado, but I'm not sure that was a common practice in Biblical times....?
We have no reason to believe our sexual tastes have changed all that much. I mean, it's not like oral intercourse is
new, for either sex. We've got depictions & references of it(for both sexes) dating back(I'm going purely from memory here so excuse me if I'm mistake) at least a thousand years, potentially far more.
As far as the backdoor..don't know, honestly. Something else, that I feel should be mentioned(and something I've managed to flat-out forget until now) is that
relatively speaking we had slightly more robust immune systems back then. I don't mean we were healthier, we clearly weren't, but anyone who survived to adulthood simply wasn't going to be killed from
just your average infection. I mean, if you had a time machine and went back just 200 years odds are you'd be dead after your first meal. The pathogens, germs and such back then were very different, and we've eradicated a good chunk of them. But because of that, we don't retain (all) of the immunity.
For those wondering; infant mortality back then was largely due to disease & such. Anyone who made it to adulthood would have obviously survive whatever killed his/her 9 other siblings. And given living conditions, it wasn't uncommon at all to come into contact with human waste on a daily basis. Because of that, I doubt it would be
that much more risky than simply living during the era to begin with.