Is never not funny.
Seriously. Cats, roombas* and gay porn would be about the perfect book.
I wonder if it’s possible to hack roombas so that it could randomy spit out pithy remarks. Because, dude, *that* would be the nirvana of erotica.
*the roomba or the cat shouldn’t really be involved in the porn. Just provide the comedic relief and the plot necessary *around* the porn to form a complete novel. Kind of like the banana and milk provides the complete breakfast part of the complete breakfast cereal commercial, which makes the whole-grain cereal the sweet porny goodness.