Well, I think that it is my responsibility to warn you that making yourself throw up on a regular basis is a terrible idea, which can trigger a lot of severe consequences. Use these tips only when necessary, remember that abusing something that does you right can lead to adverse outcome, Check this article about how to make yourself throw up glaminati.com/how-to-make-yourself-throw-up/
Look at the mirror and open your mouth. See the cave at the back end of your togue? Touch that and you will gag. You could possibly vomit with liquids if you ate 45 hours ago but if you eat recently like 30 mins ago you might get that food out in your mouth.