As someone who enjoys oral pleasures - food or sex- the concept of eating to suit the activity has always been good advice. Eating (or over eating) any heavy meal will diminish energy for anything other than digestion as well as making certain positions uncomfortable. I am found of combining food and sex....a pussy steamed banana is a true delight, as are strawberries in nectar. Asparagus, I am told, makes semen bitter. Not having had that experience, I can't confirm. Perhaps someone else will....