Lemmonex isn't impressed with her new neighbors', um, amorous stylings.
New neighbors, I don’t believe your orgasms last that long. Who are you trying to kid? These performances are not erotic or titillating, but saddening and hollow. Do you, perhaps, watch too much porn and think this is what sex sounds like? Shall I maybe pony up and get you some acting lessons?
A possibility occurred to me that I didn't see mentioned in the comments; it may be that they're trying to make some of their own porn, either for private or public consumption. All that so-called amateur video on the internet has to come (so to speak) from somewhere.