Flash Flood Dump 

When you don't want others in a public restroom to hear your explosive diarrhea. You pucker up and you flush the toilet at the same time while you dump everything you've got. The toilet flush tries to cover your ass blast noise. Also gets rid of some lingering diarrhea smells.

Girl 1: Honey, I had to dump so bad but the bathroom was full and I didn't want to be embarrassed so I had to pull a Flash Flood Dump.

Girl 2: Dang I know what you mean hun, last time I did that the toilet cut off before I could stop. It was embarrassing. :/

Flash Flood Dump by The Manchester Molester December 6, 2014

Grease the old dump truck

To have the maritals with your spouse; Sex with someone to whom it's become routine.

After playing poker all night, Troy knew his wife would be mad so he picked up some beer and went home to grease the old dump truck.

Grease the old dump truck by Shar1 May 18, 2017

pump a dump 

to jack off and take a shit at the same time. Double the pleasure, double the fun.

I was feeling very horny but had to take a shit so why not kill 2 birds with one stone and pump a dump?

pump a dump by ohnobo August 10, 2009

Dump O' Clock 

A time (preferably during work hours) when one uses the bathroom to drop their load (or just look up memes on the internet).

Kami: "Chris has gone missing!"
Tim: "It must be Dump O' Clock."

Dump O' Clock by 50K All Day March 20, 2018

Roman spider dump 

(roh-muhn spahy-der duhmp)
1. (noun) An act of questionably sexual behavior involving a pair of male participants (one seated in traditional posture on a toilet with second said participant sitting on the lap of the other participant facing in the opposite direction) and the subsequent act of simultaneous defecation (aka "dumping"). The derivation of the term "spider" refers to the 8 arms/legs and multiple eyes of the collective parties involved. The term "Roman" means absolutely nothing.

2. (verb) The act of performing a Roman spider dump

Hey!! We both have to dump before catching that train..but there is only one toilet!! Maybe we should have a Roman spider dump to save time.

Roman spider dump by bonedogg December 12, 2008

Dumpster Fire  

In entertainment or sports, a laughably poor performance usually caused by:
1. Lack of planning, preparation or talent.
2. Random events that effectively sabotage
the effort (i.e., technical problems).

Dumpster Fire is the kindest thing I can
say about Oakland's game against San Diego.

Dumpster Fire by Guitarist1234 December 22, 2008

top deck dump

Pooping in the cistern (toliet tank).

The bathroom stinks to high heaven because some total fartknocker (a true buttweed) took a top deck dump!!!

top deck dump by Telephony January 5, 2011