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
see FIREWATER.
Bear Claw wanted to make whompum very much. But squaw, Dances with Diarrhea, was in his teepee. So he pinched it off. Last of the Mylanta was nearby and she cried a tear of sorrow.
You people who don't know how to drive in the snow, that get out there and get all katty-whompus and sideways in the street, just need to stay at home.