I'm assuming that you want everyone to see the word "sanditis", and follow the same tortured, laborous route that your brain did that leads to "having sand in one's vagina." However, you share a cognitive abilities level with perhaps seven other people on this board, so you're going to have to come up with some better directions.
When I read it, I instantly thought you meant "Sand Tits," which is infinitely funnier anyhow.