The occurrence of a nightmare in such epic proportions that the victim felt as if the dream was terrifyingly real, and even after waking up, is still powerfully mentally shaken (hence the term "seismic") for the remainder of the day, unsure of the difference between reality and illusion.
That seismic nightmare about his family's death has really ruined his attitude.
by Ramasm August 23, 2017
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A discipline tasked with the acquiring subsurface data for petroleum geoscientists. Generally comprised of odd people and social misfits, seismic acquisition types make far more money than what they are worth, and the baseline quality of typical seismic worker effort renders the decisions made with this data suspect. On the Toolbox Scale, seismic acquisition workers rank just above Tree Planters and below Vacuum Truck drivers.
Sorry you lost your job cleaning bathrooms, you can always try getting a seismic acquisition job.
by Dr Phil's Nurse September 18, 2018
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An abnormally massive wave.
{On November 26, 2019 off the coast of Oregon (United States), 11 different satellite instruments designed to measure wave height, wave length and the direction of ocean swell systems, relayed real time and pattern delayed SAR and altimeter data providing conclusive evidence of the first ever observation of a Seismic Aqueous Waveform (S.A.W.). In the early 1800's, Sir James Clark Ross and British Naval Officer Count Fluervo of Korkyville presented an original postulate for Seismic Aqueous Waveforms (S.A.W.) suggesting that chaotic and abnormal deep sea land masses (what we now refer to as tectonic plates) were capable of colliding and dispersing an exponential quantity of kinetic energy resulting in oceanic swells up to 1950 feet high (conditions unknown at the time proximate to the mathematical equivalent/scale estimated during the Paleozoic Pangea fracturing events, circa 350 million years BC). The magnitude, span, volume and force of a S.A.W. is much greater than a Tsunami, hence a S.A.W. is also commonly referred to as a 'Supernami.'}
1. In 2019, a Seismic Aqueous Waveform was detected about 100 miles west of the California/Oregon coastline.

2. {Water cooler discussion begins} "Did you see the size of that Tsunami that nearly hit the California beaches this week?" {Conversational partner replies} "My friend, that was not a Tsunami, it was a S.A.W,, also known as a Supernami."

3. Sir James Clark Ross and Count Fleurvo of Korkyville were finally recognized for their research and position on Seismic Aqueous Waveforms (S.A.W.).
by Charitable Disguise December 19, 2019
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WHEN YOU MOVE SOMEWHERE WHERE EARTHQUAKES ARE FREQUENT AND THERE HAVE NOT BEEN ANY QUAKES SINCE YOU MOVED AND YOU THINK IT'S BECAUSE YOU MOVED THERE.
Rhett: We haven't been in an earthquake since we moved to California!

Link: Maybe it's because we moved here, the quakes flee from us!!

Rhett: Link, that's Ego Seismic Thinking.
by ASBAANMONOLOGUE March 10, 2012
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The act of BBW women bouncing her ass on your tongue in such a rhythmic motion that it looks as though there are seismic waves on the surface of her posterior.
Sentence: "When I Seismic Salad Tossed Tiffany it was like a 9.8 magnitude earthquake on her buttcheeks"
by GenralGrave June 28, 2015
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The sexual event in which the giver during anal penetration farts, and the receiver feels as if he himself has farted, due to feeling the vibration of his partner's fart passed through the penis and into the receiver's ass.
All was going well until he hit me with the San Andreas Seismic Surprise.
by SmutLion December 12, 2010
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The act of BBW women bounding her ass on your tongue in such a rhythmic motion that it looks as though there are seismic waves on the surface of her posterior.
Sentence: "When I Seismic Salad Tossed Tiffany it was like a 9.8 magnitude earthquake on her buttcheeks"
by GenralGrave June 27, 2015
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