Many years ago I had a Thunderbird with: FLYNBYU and I felt the need to live up to the plate. And another car with: ALWZL8!! because I was. And I had an Eagle Talon that I drove like a NASCAR driver between 4042 and RTP to work and back everyday with: SCRMNEGL Now, I have four children, drive much slower in a boring minivan with no vanity plates to identify me ;-)
My current favorite vanity plate is one I see on my commute to RTP once in a while: IH8I40. I agree wholeheartedly!
A friend of mine had one that sai UB6IB9, I sat there for about 30 minutes trying to figure it out LOL