Just like a sponge sucks water, a sponger is a woman who sucks money from a man.
Spongers make the man pay for everything….for food, drink, movies, entertainment…everything. In worst cases, they even make men give them expensive gifts and cash.
And no, the sponger will never give milk, she knows that once the man gets the milk, he is gone, she cannot sponge him any more. 🙂