This was on cable TV, in the 80s or 90s. British-made.
It was a parody of those “documentaries” about UFOs, the Loch Ness Monster, & whatnot.
I recall a line. The narrator (British) has been implying that the Loch Ness Monster was a Nazi sympathizer, or even a double agent for Germany.
*Nessie? Nazi? The ball’s in your court. *
It then cut to another segment.
Can you identify the show?
It’s title may have included the phrase “…go off at Loch Ness.”