My Toilet Is Becoming The Beach

If i die buried in sand in my apartment, this would be the cause. Out of nowhere sand has filled up my housemate's toilet. I guess it because of the rain and maybe the toilet's drain got clogged up but why sand??? By the way, the toilet tiles are actually blue... yes, its true. You can hardly see the tiles. Well, the owner promised to come and fix it but it would probably take awhile. Until then, I really want to stay alive...