Weeeeeeelllllllll my original name (Keep in mind, I was young) was Birdo@Subcon because I thought they had to be modeled after emails Later on, I forgot my password, had'nt registered my email adress, and realized I did'nt like Birdo as much as Toad anyway.
Someguys had really cool user names with Yoshi in it ( no, not the cheezy Toshi and Doshi and Moshi etc. etc.) and I wanted one that showed how much I know about Yoshi's and Mariology. I needed a name to command... to power!
I needed to become the master of all those who would know me...
I needed to become.... the Yoshi Master!!!
Then I made the A in Master to make it sound all white boy slang. :P