fat-quake 

An earthquake created by the movement of fat people.

Bob started dancing and caused a fat-quake.

fat-quake by yeetlord0222 December 27, 2018

Fatquake 

When fat jiggles on cats. Usually caused by a human lightly running their fingertips along the fur of a fat cat.

Oh my god, look at the fatquake!

Fatquake by someone just fatquaked April 15, 2014