FYI...that pie scene you refer to comes from the X rated version of the 1976 British Film "Keep it Up Downstairs" which was a sex parody of the British TV series "Upstairs Downstairs"
Unfortunately you are not going to find that pie scene on any British DVD release of that film.....because the original Britiish version was cut in order to get a BBFC 18 rating, so it only has the softcore scenes and none of the hardcore scenes. According to IMDB the producer shot additional hardcore scenes, including that pie scene, for the European release of the film only. So you will need to hunt for an uncut European edition of that film. All the versions currently online (e.g. it is on Dailymotion) are the censored UK version of the film, which omit the pie scene.
Well.....it was one guy and one girl ....but who they were....nobody knows because they were unknown actors that are not listed in the film credits.
According to IMDB the producer of that film made lots of sex comedies in the UK in the 1970's and he often got sued by the main actors in the films he made, because his Modus operandi was to shoot all his films with the main actors, and he included lots of minor UK celebrities in his films, and then once the main film was completed he would then hire local porn stars to shoot addtional X rated scenes where he later added into the main film as inserts. He created extra X rated inserts in order to produce an X rated version for the European market.
Several of the UK celebrities later sued the guy for hiring them under false pretences because they agreed to be in an R rated film but later found out he had turned it into an X rated hardcore film that they did not want to be in. He also used to use editing tricks to make it appear as if a famous actress was nude in a scene, by shooting nude scenes with a body double and cutting and splicing the UK celebritie's head with footage of a body doubles nude body etc. Dr Who actress Lalla Ward sued because her face had been cut and pasted onto a body double's nude body. This was common practice in those days (e.g. Heather Locklear's nudity in the movie Zapped was all done by cut and pasting a body double to shots of her face etc).
Anyway, none of the people in that pie scene were famous actors....they were merely X rated uncredited extras the producer brought in to add some hardcore inserts.
Love you, too
