I dunno... I'm rolling the name around in my head and the acronym still doesn't click for me.
"Ayaya & Mikitty" may have been a boring, unoriginal moniker for a superduo but it's not like there isn't precedence:
Shuji & Akira
Takky & Tsubasa
Simon & Garfunkel
Nope, it's GEE-YAH-MU. Oh, well...