Dream of toilet

I was in a place like a hospital or old dormitory. i was running away and looking for something / someone. My mother told me we must get out of the place cos my dead was beheaded and his head is in the toilet. she told me not to open the lid, but i did and saw he had toothpicks pinned in his head as well. i was horrified, disgusted and scared in the dream but knew mymom and i needed to escape safely. What does this signify?