sponge ass

a. To take (absorb) something that doesn't belong to you
b. Being an overall dead beat kinda like a bum on welfare, a leech to society if you will
c. take advantage of community items, (more than you should take)

you: blood! who drank all my half and half?
sponge ass: my bad bro I needed it for my protein shakes this last week
you: your such a sponge ass nigga go get your own goddam half and half before I smack you!