At first glance one might think this might be a super-duper scoop of indescribably delicious ice-cream used to woo a winsome wench. On second thought, it might be what a "sponger" does who drops in out-of-the-blue, (usually around suppertime), for a free meal.
The latter might be closer to the truth...as spondulicks is an American slang term for money or cash (which the sponger never seems to have enough of in his pocket to pay for his drink, his meal, or your's for that matter.