the shuddering that a thick woman's body goes through during vigorous sex.
i was so amped on getting with bertha last night that she experienced a full-blown girthquake.
by squoze.lemmins September 6, 2009
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(1) The effect a very attractive woman (or group of women) has on the 'girth' of male members in her (or their) vicinity. This Girthquake can be measured on the 'Dichter' scale- from one up to ten, and is a handy way of discussing the attractive potential of women. Can be accompanied by rattling of glass on table to indicate violence of initial tremor, or at higher ends of the 'Dichter' scale by 'Star Trek' style synchronized pitching from side-to-side whilst trying not to spill drink, as if floor is swaying.
(2) (noun) A way of describing a previous evening, or party- if said event led to the conquest of an improbably attractive woman, or if the ratio of such women to men was unusually high- said event/evening can be described as being a 'Girthquake'. In the event of such an evening leading to a secondary event (such as an afterparty) where a further woman (or cluster of extremely attractive women) who rate highly on the Dichter scale is discovered, then the term 'Aftercock' can be substituted.
MAN1: "G...g....g.......GIRTHQUAKE!" (has spotted woman who scores on Dichter scale- remember optional rattling of glass on table to indicate violence of initial tremor)
MAN2: (adopting scientific expression) "In my opinion at least a 7 on the Dichter scale. Be careful, there is a strong chance of an 'Aftercock'"
(stands, switches to Roger Moore expression and approaches woman)
by N.J McBlanky July 9, 2009
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Probably the thickest cock you will ever see. And this thing is thick a little thicker than a baseball bat.
Zack: wow latisha got destroyed by that guys girthquake the other night
Nick: wow he must be really thick
by Thick nick October 5, 2014
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When a women's thighs are still shaking after sex due to the girth of the penis that was just inside her.
by That_0ne_dude October 20, 2019
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Rapid shaking of objects in direct interaction with fatness. Obese people tend to cause this natural disaster by jumping and/or walking. May be known as the rumbling of the ground caused by obese people.
When an obese person jumps and hits the land, the rumble that occurs is known as a Girthquake.
by ChrisRyan January 24, 2009
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When your dick is wider than the length and after you finish having sex the vagina is the perfect width to insert a coke can.
My vagina was so tight until Kev fucked me with The Girthquake..
by Skvmfvkk February 11, 2019
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When you pounding a girl so hard with your girthy salami stick, that it causes cracks in her snatch region. In rare cases, the aftercocks can be so powerful, that they cause a rectal prolapse. ER trips are strongly recommended if this occurs, but only skanks and weenie hut JR. members actually go to the ER.
Miguel Cumbrera: Yo hombre, we hitting the casino tonight? I hear they’re doing strip poker.

Stoney Tonio: Yo cabrón, sheeeeeet I can’t tonight. I gave my girl a girthquake. I thought I was just taking her to pound town, turns out I took her to pound country, and busted up her clam bake. Now she has two cracks down there 🤣

MC: Dawg you’re gonna have to teach me that one. We can try it at strip poker next time. There are loads of loose grannies down at the casino waiting to be plunked by our micro Slim James.

SA: Sheeet home sizzle, sounds good to me, I’m getting a half Chubb just thinking about it. I’m listening to Girth Brooks right now to get in the mood.
by Stoney69 July 29, 2022
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