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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what happens when overweight people run or jog to get somewhere quickly
Did you see that obese guy running to catch the bus? Total Girthquake!
by Blackmajik December 2, 2006
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1. the reaction you get by inserting your dick into the orifice of your choosing causing an uncontrolled tremor in said partner
2. having sex with a girl that has a seizure upon penetration and tilting her head and riding the aftershocks out keeping in mind to not let her choke on her tounge
1. dude she was fucking tight,i stuck it in and caused a 6.0 girthquake on the richter

2. omfg i stuck my dick in this girl and she had a seizure,so i held on and kept fucking her....i survived the girthquake
by w1thdrawn September 16, 2011
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the type of earthquake that gets extreme ammount of facebook attention within the first ten minutes; not to be confused with a dearthquake which is the type of earthquake that gets extreme media attention
*Facebook*
Craig: #OMG EARTHQUAKE!!!!
Marco: it was only a little girthquake you attention seeking whore
by JaMarko October 21, 2011
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an earthquake or tremor caused by the walking jumping or just general motion cause by a fat person
tom: oh my gosh no! here comes jeffery johnson its gonna be a 10.0 girthquake

bystanders: run!!!!!!!!!!
by tom beotch! November 30, 2006
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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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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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