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1.
A crap so large, that when taken is so exquisite and satisfying that it gives you goose bumps during release.
"I was in a bad mood all morning, not knowing why, until I took an exhilarating goose dump. Now I'm happy as a pig in goose dumps".
by daust126 March 05, 2011
 
2.
When you're on the crapper and a long and deep excruciating pain develops in the dark depths of your bowel, which causes your skin to develop goosebumps.
Person 1: "Why are you taking you so long in the bathroom?"
Person 2: "I have a mean case of the goosedumps!"
by Deromes August 27, 2007