Lynne and 'Mantha are in a sauna. Lynne tells 'Mantha that she and George went to see a movie. 'Mantha asks her how it was, to which Lynne replies that it was very noisy. 'Mantha asks if it was the film that was noisy but Lynne tells her it was her and George in the back row that were noisy.
The way Lynne tells 'Mantha that she went to see a movie suggests that she, or 'Mantha, had never been before. Normally people would say that they went to the cinema. Also, normally people would ask which film they have been to see. It's almost as if Lynne and 'Mantha had been previously discussing these 'movies' everybody has been talking about but were apprehensive about trying it out themselves. Lynne said she would go but 'Mantha would wait for feedback before going herself.
So 'Mantha is interested in how the experience of going to the movies was and all Lynne tells her is the volume of it all. That must be a little disappointing for her. 'Mantha had been looking forward to hearing all about it since they spoke and she must feel cheated. She asks if the film was noisy but she has a thousand other questions ask. How much was it? How long did it last? Who was there? Just look at the way she stands up to show just how excited she is that Lynne actually went.
Lynne may be implying that she and George were being amorous in the back row, but it may be to hide what was actually going on and what actually happened. George and Lynne were in awe of the whole experience and spent the whole time clapping and hollering at every little detail of the 'movie'. They cheered at the popcorn stand, they oohed at the man collecting the tickets, they applauded and danced to the Pearl and Dean music and finally they shouted at the manager who asked them to quiet down and leave. In the end they never saw the movie and it is likely they won't be allowed back. 'Mantha, you'll just have to go and try it for yourself.