Woo Doo is a song sung by Starfire in "Open Door Policy" of the "Island Adventures" special when she was trying to explain to the other Titans how dangerous the mysterious side of the deserted island can be.
Starfire: The mysterious side of the island
Woo woo doo. Woo doo!
It's where the mysteries lie
Woo doo. Woo-hoo-hoo!
It is the different from my land.
Woo doo. Woo-oo-hoo!
Where marvels await the eye
Woo doo. Woo Doo!
Starfire: Shrouded in the mysteries.
Starfire: Ancient treasures to discover.
Whoo-woo. Woo doo. Woo-hoo!
Starfire: Action and adventure await the brave, but part woo-doo woo-doo.
But WATCH OUT! There's a shadow on that wall!
Woo-doo woo-doo woo-doo woo-doo woo-doo...