this poo has more to do with taking a wet dump when one is hungover. it can also be a massive exercise of "dropping your demons" after a cheesestake or spicy enchiladas. Sometimes, whompums are similar to Study Butt which is a nasty combination of caffeine, stress, and no sleep. Whompum used to be used as a San Franciscan currency.
from the Apache word of WHOMPOMM