One of our main aims for SilverStripe is that it is substantially easier that other systems to install, build, and maintain your website, especially for the challenge of sites that can be visually and functionally really interesting. To convey this idea we came up with the line "simple enough for your mum to use", and although it was meant in completely good faith, a few people have emailed saying they found this offensive and uninspiring.
We had the suggestion that would make our site randomly choose any family member (mum, dad, brother, sister, niece, nephew, neighbour, grandma, granddad, cousin, uncle, aunty, son, daughter), but it'd nice to not offend any group of people ... PBWiki offers the humorous line "as easy as making a Peanut Butter sandwich", and we'd tend to agree with a Linux.com article that we should come up with something informative, inspiring and humourous. Keep posted.