`` once upon a mih'nigh ' dreary while i ponnered weak 'n ' weary over many a quaint 'n ' curris volume of forgotten lore while i nodded nearly nappin ' sun'ly there came a tappin ' as of someone gen'ly rappin ' rappin ' at my chamber door `` at this precise moment there comes a soft rapping at the cheap fiber-board door of tansy freneau 's airstream .