goosh
To move in a messy, liquid manner.
informal
The ground gooshed in places, soggy from the winter rains.
To gush.
informal
More fluid gooshed forth, arching beautifully and descending to strike Prior's arm. It was hot and gooey and repulsive.
To smush, to smash.
informal
Calvin: Here's a bug plodding resolutely across the dirt. […] If he's mocking me, I'm gonna goosh him.
Where it comes from
Imitative? The sense "gush" (at least) is related to gush. The sense "smush" may be related to smoosh.
Adapted from the Wiktionary entry goosh (CC BY-SA 4.0).