You have to take a crap so bad and because it's fully brewed it's pressing upon your sphincter. The skin on your entire body breaks out into goosebumps.
"We have to pull over, man. It's been 4 hours since we left and I have to take a dump so bad that I have shitbumps! See them?"
Sal had to evacuate his feces, and wound up taking a shidump, which resulted in an extensive, overdrawn session of lurid defecation, thus alleviating his ardent anus.
"Ah man, don't go into the restroom, I just took one big shidump!"
"That shidump made all the difference! I feel lighter now."
"Alright let's eat, but first let me take that shidump I've been waiting for."
A term from the Edo period in Japan refering to places, persons, or things of effortless perfection. Anything that is Shibumi is noble and fulfilling in a manner that is not shaped exclusively by analytical thought. Simply put, a state of great refinement underlying commonplace appearances.
"I can't wait to get back to shibumi for a jelly sandwich"
or
"BUMI! Whats-shapp'in baby!?"
or
"Where is hell is shibumi?"