Next time someone says "Keep it simple, stupid" when you think you've tried your best to simplify and don't deserve to be at the receiving end of the much abused KISS principle....try this - "Make everything as simple as possible, but not simpler." And, hey, do tell them it was Albert Einstein who said it. Har Har. ;-P
PS: Finally, if you feel like, you can also tell them that I told you to tell them. Stop. Something tells me I must learn to make everything complex but not complexer!