Loretta's musical tastes run no further than her usual piano repertoire, brought out whenever she begins her signature caterwauling at cocktail parties. Thus we can assume here that Loretta means slippers and not House Shoes the DJ. Leroy couldn't very well have used "slippers" and "slipping" in the same sentence, could he? The neighbor no doubt is entranced by Leroy's implied yet frank complaint of a sexless marriage.
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