When a mans flatulence moves forward instead of back or straight out the cheeks and causes his genitals to vibrate
"Man this leather seat just made me have a girth-quake"
When the bust is unbelievably strong, creating a anomaly that's too much to process.
Person 1:"Bro sam did a girth quake right infront of me yesterday"
Person 2: " fuck im sorry to hear that"
When thicc girl such as a PAWG shakes her large glutius maximus aka Berfday cakes (Birthday cakes) during a twerk or similar dance move and the shock and ripple effect that takes place is known as a berf quake.
2 guys at a generic party....
Guy1: Oh shit do you feel that?!
Guy2: Brace yourselves!!! BERF' QUAKE!!!!
The earth rumbling orgasm a girl has when you first stumble upon the mystical G-Spot.
Karen: OMG Becky Tyrone totally gave me a Poontang-Quake!
Becky: You lucky bitch no man's ever even came close to giving me "The Quake."
A soul-quake is a ripple of truth crying out to be heard.
My being rippled with many a soul-quake, shivering and shaking, waiting to be heard.
the act of shaking a females (preferably) breast of large size in a rapid motion
The wave of online social network updates occuring within the first ten minutes following an earthquake.
A: "did you see that e-quake on facebook?"
B: "Yeah 20 minutes of updates, for 20 seconds of minor tremor."