How do I make myself sick?

I need to get out of a family event tomorrow, since my favorite cousins and I got into a fight and the got their uncle involved. I need to get sick by 5:30 pm tomorrow. I already tried chugging water and eating soap (eww!!). Any other ways to make myself sick, as in, feverish, sore throat, nausea, etc.? I know this sounds really stupid, but it's what has to be done