I had one for a long time that wasn’t immediately obvious, but if you got it you got it: IMAYHOO I later added a ‘Did you Yahoo!?’ license plate frame and more

I had one for a long time that wasn’t immediately obvious, but if you got it you got it: IMAYHOO I later added a ‘Did you Yahoo!?’ license plate frame and more people seemed to get it (and not think phrases like ‘I may hoo?’).