Why Leeteuk is the one who said : "This song is dedicated to the World's Biggest Fan Club, the "ELF" my girls, my angels."

Donghae : This sonn is dedicate to the woooorld's piggest pan krub, da "EFL" my gurls, my and gels.

Eunhyuk : This song is delicated to the werld's piggest pan krub, der "ELF" my gerrls, my angerls.

also,

the lyrics may very well mean “y free and single, ready to bingle”

in which bingle means first base in a baseball game

and shindong gave a hint pertaining to baseball

which means super junior is y free and single,

ready to get to first base.