Here's part of it, taken from my random quote database. Sorry it's the best I have for now, at least until I can transcribe from the Yum Yum album (available in all good record stores and quite a few bad ones as well)
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Come on everybody- it's gibbon time!
We're the Goodies- how d'you do?
We've just been out to the zoo
We saw a monkey in a cage
Doing a dance that could be the rage
It's not bad, so let's all do
The Funky Gibbon-- Ooo Ooo Ooo!
Do Do Do The Funky Gibbon (The funky gibbon!)
We are here to show you how
Ooo Ooo Ooo The Funky Gibbon (The funky gibbon!)
Just like you, so come on do, The Funky Gibbon now.
Dogs are always howling
Cats are always yowling
But gibbons only like to sing and dance
You be like that monkey
Get a little funky
And then know why, gibbons smile
Given half a chance..
Do Do Do.. etc
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Never settle with words when a flamethrower! is much more fun