I didn't make this.. just came across it.
Its kinda puerile... not that funny... but maybe the 10 year olds on MPGH may enjoy it.

Waltzing Matilda, who bloody kill'd her,
Lying on the grass with a dagger up her ass.
Along came a granny, shot her in the fanny,
And that was the end of Waltzing Matilda.

Alternative ending :

Waltzing Matilda, who bloody kill'd her,
Lying on the grass with a dagger up her ass.
Along came a spider, tickled her vagina,
and that was the end of Waltzing Matilda.

I do so apologize for the immaturity of this.