vexillology

vek-suh-lol-uh-jee,
-noun, the study of flags

--I've devoted my life to vexillology, the study of flags, but my true passion is Chexillology, the study of Chex mix.

--Today in vexillology class, we're going to be studying the female reproductive system, with a special focus on the vagina. Oh, and PSYCH! We're still studying flags.