Be careful what you ask for

So we have one of those big jetted tubs in our master bathroom. The boys decided they wanted to take a bath together in it tonight. "Fine," I said, "as long as you don't splash water all over the bathroom." They understood. I was very clear and very firm about what I expected and they agreed that if they splashed they would have to clean ALL THREE bathrooms in the house as a result. A half hour later I peak my head into the bathroom and there is water everywhere! Wasn't I clear, why did this happen? I asked them what were they thinking. Their response... "we really wanted to clean all the bathrooms, mom!"