'Mud! mud! glorious mud!
Nothing quite like it for cooling the blood,
So follow me follow,
Down to the hollow,
And there let us wallow in glorious mud.'
Written in the 50s, and still going strong. The lyrics to the whole song are here.....
In the original, this bit is sung by an amorous hippopotamus to his 'fair hippopotomi maid', while she sits and combs her hair. Perhaps we should act that out while we sing, but we just like to just stomp about while singing it really loudly.
For a modern, adult version on the hippopotamus theme, I love Flight of the Conchords, with their geeky cool rap Hiphopopotamas vs. Rhymenoceros on YouTube. So good, but NOT suitable for kids!