(Noun) When you and your cat are sitting on the couch and it does that thing where it shakes a whole bunch, causing the couch to vibrate such that it feels like an earthquake.
I totally panicked when I thought I felt an earthquake, turns out it was just a catquake.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.