The video above is an extract from The Mystery of Marriage, a 1932 sex education film that examines the similarities between how humans reproduce and... mould. And spider sex.

The BFI's new 2 DVD set, which includes other great titles such as Deferred Payment (a turbulent tale of semen and syphilis) and Six Little Jungle Boys (six men go off to war, but get tempted by the sensual pleasures of the East) is probably the very last thing in the world you would ever want to spend your money on.

Instead, head to FHM's Kama Sutra for magnificent, faux-lesbian video turorials of the ten best sexual postions so far imagined by man...

fhm.com