A phenomenon that occurs when an obese person experiences an epileptic seizure.
Shawndrae had a magnitude 6.9 girthquake at the club last night, killing three people and injuring seven others.
by Archmageous November 12, 2018
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The shuddering in bed that keeps you awake because your man is jerkin' his gherkin
"I'm bloody knackered today, I barely got any sleep because he caused a 30 minute girthquake last night"
by Girthinator June 27, 2021
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A common phenomena manifesting itself in the form of deep earth tremors directly caused by a "gunt in motion" or an obese passerby.
Hold on dude here she comes! It's a GIRTHQUAKE! {{{SHAAAAAAKE!}}}
by mightysooner May 17, 2006
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Girthquake is made up of TimTheTatman, CourageJD, and basicallyidowrk. They started as a Fortnite trio and use the name because they are all overweight.
you better watch out Girthquake is coming.
by itsashley June 6, 2021
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A male appendage so tectonic that it ruptures the uterus, causing the female to tremor as her plates separate, submit or push together
Her tectonic plates ruptured as his magnitude 7 girthquake entered her

She trembled as she tried to squeeze the girthquake sized butt plug out of her sphincter
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A rare incident when a male violently ejaculates while uncontrollably shitting. The combination creates a ground-shaking event.
The Peeping Tom caused mayhem for the building managers because he would regularly Girthquake during meal delivery.
by Deeeeznutz March 17, 2021
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