A 16-year-old wanted to find the most effective way to hide blood after splattering it everywhere. So she put a few drops of cow’s blood on several pieces of cotton cloth and used three kinds of cleaner to wash the cloths.
Answering "I need to hide a body" used to be one of Siri's little jokes. She used to give suggestions. She doesn't anymore. Why? We can't be sure, but it miiight have something to do with an accused murderer who asked the question apparently in earnest.