It is obvious that they know the order
One of the best aspect of Wily Mo Pena is his name. I have never heard of anyone else with a seperate “Mo” portion within their name, but it fits so perfectly. Adding Mo to any name automatically makes that person amplified over anyone else that shares the same last name. I took the liberty of going through the Mariners 40 man roster and picking the best fits:
Luke Mo French – http://www.youtube.com/watch?v=IHjWNXx_T78
Miguel Mo Olivo – O – LIV – O! MOOOO!
Matt Mo Tuiasosopo – The only person that might consider adding Mo to the end of their name.
Chone Mo Figgins – This guy could bat over .250
Chuck Mo Furbush – Yah, he would change his first name to Chuck if he added Mo.
Two Points on a Compass 
Good mooning to you too.