Secrets of a Superstud (1975)
Secrets of a Superstud, also known as It's Getting Harder All the Time and Naughty Girls on the Loose is a 1975 British Sex Comedy, one of many to be also filmed in a hardcore version for export. The film was shot at Twickenham Film Studios under the title “Custer’s Thirteen”, the general release prints and the hardcore version were processed at Kay Labs at Highbury, North London.
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