A seismic dump is a poop that once leaves the bowel, instantly crashes into the bottom of the toilet, often creating tsunamis, vibration, panic attacks, chaos, and of course seismic activity that registers on the national level. Often accompanied by a wet arse, stains in the toilet bowl, and a horrendous smell that can linger for days like radiation fallout.
I was taken off my feet by the shockwave of tom's seismic dump. When he walked by, thats when the fallout smell hit me and put me in a coma.
by CrimsonOsmium February 12, 2008
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