Ahhhh...the creativity of a child!
Is someone coming up with a cool liscense plate number that you want to be read by the driver in front you in his rear-view mirror?
Let me tell you about what a friend of mine did several years ago. He used this same thought and creativity and special ordered the following liscense plate:
He got a letter from the registrar after about a year saying that his plates were no longer "acceptable". It seems that some busy-body noticed in his/her mirror the intended message and wrote a letter to the state.
There is no pleasure in having nothing to do; the fun is having lots to do and not doing it.