A Diarrhea Dump is basically a watery nuke that comes out of your anus that is the equivalent to Donald Trump'shairline.
Jaqueen: Hey TJ! Did you see Centrino's outfit last night?
TJ: Yeah, it looked worse then a Diarrhea Dump.
Centrino: *ahem* I KNOW FUCKING GOD AND I WILL TELL HIM TO EAT YOU!
By Sapphire
Diarrhea Dumping
Where one or more people get a bucket of diarrhea and dump it over the side of an overpass so that it will hit the cars passing below.