Our company had begun to demo its new product, a client-server office suite. It was pretty new to everyone, and there was a lot of groundwork to be done to ensure that the demos would go smoothly and the stories would be compelling. The marketing guys decided to host a three-way question and answer session between the pre-sales people, some of the key developers, and the senior marketing suits.
About ten minutes into the session one of the pre-sales guys asked about per user memory consumption at the server end, stating that his tests showed a meg per user minimum (back when meg servers were considered big). Before anyone technical had a chance to answer, one of the senior marketing suits piped up and said, in a totally exasperated voice, "It's client-server! You don't need memory because it's in the network!"