LOL... No...
Have you ever stayed up all night because you were obsessed with finishing a cake only to end up ruining it because you added too much and it looked gaudy? 
No, if anything I'll forget something.
Have you ever made a wedding cake without meeting the people, just talked to them on the phone or internet?
Not exactly - but I made one with the only contact being through my sister. Luckily, she was anything but a Bridezilla, and the cake turned out just as she hoped.
Have you ever overwet bake even strips or towelling to the point that the cake didn't bake properly?
Not with cakes, but my cat steals muffins and rolls during the night! She is locked away for cakes, but didn't even think about it with breakfast muffins. Didn't even hit the table, flying leap and snatched it in midair!
Have you ever ran out of energy and used a paper printout??? (family, of course! not customer)
Yep - that's why we used paper once. SIL2B decided at the last minute to start a very detailed cake. I said I would help, but I had another cake to do. At 4 am (party at 10am) she gave up, so we added the paper fish instead of painting it. No pics, thank god!
Have you ever - used cake as a bribe?
no never did that.
have you ever baked a cake, turned it out of the pan and half the cake stayed in?
lmao! ALL the TIME! 
Have you ever reneged on a promised cake?
who hasn't?
have you ever spit in your cake batter for a customer you didn't like? been tempted?
no... but.... DH's SIL got her salt switched with the sugar when she was making a dish for her work potluck.
because i hate her.
have you ever done something bad as revenge against a customer?
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