
Marmaduke is enjoying a romantic moon-gazing interlude with his most recent love interest while his fat, elderly, psychologically disturbed neighbors spy on them. Marmaduke's neighbors, enraptured in their voyeurism and no stranger to surreptitiously observing Marmaduke's conquests, quietly observe the tender, intimate scene in the next yard and eagerly anticipate the gentle plateau's sudden eruption into a fit of loud, violent animal sex.
Neighbor-Man and Lady reminisce about when they were young pups, er young folks. When Roosevelt was president (Teddy not Franklin).
Neighbor-Lady is reminiscing wistfully about those glorious nights, not too many years ago, when it was her sharing those tender moments under the moonlight with Marmaduke.
And they must live on a tall cliff, or they wouldn't be able to see the sky from that angle.
The fence is confusing. I can't tell if it's the standard neighborhood picket fence (which would mean the couple suffers from dwarfism), or a six foot privacy fence (in which case, the neighbors are both obese and roughly seven feet tall).