It goes like this:

Doo dooby doo dum dum, dum doo dumby dooby doo dum dum, dum do dumby dooby doo dum dum, dum do dumby dooby doo dum dum, dum do dumby dooby doo dum dum………………….

Yes, this is a legitimate song.
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FRIENDS: SCOOBY DOOOOOOOOOOOOOOO

Calli R: This is retarded!!! Who could even guess what this is? I got a song for you! dooooooooYouAreAnIdiotooooooooooooooo!

Gidget: is someone who is knowledgeable in a particular category. Reminds me of …Breaking Up Is Hard To Do_Neal Sedaka

Drop Acid, Not Bombs: is this it? There she was just a-walkin’ down the street, singin’ “Do wah diddy diddy dum diddy do”

Resting_…: it is disturbia by rhianna