Procrastination.

If pressure in my cranium (Pc) and atmospheric pressure (Patm) are such that Pc excedes Patm, given that I still have a 2000 word essay to start and finish by Wednesday ([Pc>>Patm]^Uni where Uni is equivalent to the Unfun constant), what would be the best way to relieve said cranial P without drilling a hole in it?

Extra points for pretty equations.