Revealing mistake: During a few of the "flaming fart" scenes, you can see a wire connected to the bottom of the actors. It's hard to see because it appears that it was attached to their legs in some way, but you can still see it when they move around a lot. The easiest place to see it is when the "devil" knocks on the door and they all fart and jump around, look carefully between/to the side of eddies legs for a black wire. It's not the dressing gown belt because that's tied around their waists.
Bottom (1991)
1 revealing mistake in Terror - chronological order
Starring: Adrian Edmondson, Rik Mayall
Genres: Comedy
Continuity mistake: Eddie says that the fairground music reminded him of his dads funeral. But in many of the other episodes Eddie says that he has no idea who his father was.
More quotes from Bottom
Trivia: Rik Mayall and Adrian Edmondson originally planned to call the series Your Bottom, so it could allow viewers to say things such as "I saw Your Bottom on TV last night."