(Inspired by Maggie Sullivan) Today I'm in love with the Stith Thompson Motif Index. I want to caress its pages in the shadows of the research library reference stacks as it shows me its classification system for folktales. A kiss for each heading:

A. Mythological
B. Animals
C. Tabu
D. Magic
E. The Dead
F. Marvels
G. Ogres
H. Tests
J. The Wise and Foolish
K. Deceptions
L. Reversal of Fortune
M. Ordaining the Future
N. Chance and Fate
P. Society
Q. Rewards and Punishments
R. Captives and Fugitives
S. Unnatural Cruelty
T. Sex
U. Nature of Life
V. Religion
W. Traits of Character
X. Humor
Z. Miscellaneous

It's coyly missing some vowels. Its brother, the Aarne-Thompson Tale Type Index, does not share the motif index's intensely playful eyes, not by a long shot.