The phrase "momentary pleasure" refers to a short-lived feeling of happiness or enjoyment. It is a temporary and fleeting experience that may come from indulging in something pleasurable but does not last for a long time. Full definition
Sick of facing the always ominous blank Word document and the only momentary pleasures of hard liquors, he switches over to the saving grace of all hard - pressed novelists — medication. (thecriticalcritics.com)
Positive fantasies are great for momentary pleasure, for exploring a possibility a person might have in the future by trying it out mentally. (entrepreneur.com)
The other school of thought believes that an online relationship is a temporary relationship and only momentary pleasure. (datingintimate.com)