"Of all the glad new year, mother, the rum tum tiddledy tum." ([U3.491])
From the poem The May Queen by Alfred Lord Tennysion. It starts:
'You must wake and call me early, call me early, mother dear;
To-morrow ’ill be the happiest time of all the glad New-year;
Of all the glad New-year, mother, the maddest merriest day,
For I’m to be Queen o’ the May, mother, I’m to be Queen o’ the May...'