How can I make myself throw up?

I am dieting (i am not anerexic how ever it is spelt) but when I eat a lot and need to get rid of it... smell something really nasty, and look at something really nasty. Your gag reflex may be slow so just try 2 fingers for like a minute that's what I do mine us slow and it may take 3 tunes to throw up I promise it works or you could drink a lot of water and burp a lot and it will also make you hurl