Gregory N. Mankiw may be an entertaining (re: so pompous it’s funny) man, but his lecture is probably the last thing on the mind of those enterprising students who trudged through the rain to Sanders for today’s lecture. At the beginning of class, a bald bat-like man ran through lecture in a bright orange jumpsuit and attacked an unfortunate student toward the front row.

As a bemused Mankiw looked on, a doctor in lab coat rushed in seeking the bat boy, sedating syringe in hand. And we’ve got it all on vid.  Marginal cost of watching? That essay will probably suffer. Marginal revenue? Unbounded joy.

Want more? Check here. And make sure you go see Bat Boy playing December 4-11 in the NCT.