To the tune (probably obvious) of "The Tigger Song"

Ohhhhh The wonderful thing about knickers,
Is knickers are wonderful things.
The gussets are made out of cotton,
The sides are made out of strings.
They're bouncy, trouncy, flouncy,pouncy,
Fun, fun, fun, fun, fun.
The most wonderful thing about knickers is,
They cover up your bum.