The world will end and Elvis will come back to life.
I just did that myself. Baking it for a charity event at work tomorrow and too late to start a new one now, luckily I made one and a half so I could test a piece from the half cake.. Personally I would eat it maybe with some vanilla ice cream it would be ok but couldn't really foist it on anyone. I guess it depends on how much more you put, I was supposed to use one teaspoon but slipped as pouring onto the spoon and put about twice that, and it is very noticeable! In fact I think I have a stomach ache already :(