To squit means to squeeze something between your fingers and thumb.
Squitting is usually done to small things, like bugs or crumbs.
Examples:
I squit the bug and it went away.
She squits the bread to make it small.
He squits the ball and it flies away.
Don't squit the cat, it doesn't like that!
I can squit the mountain and make it small!
She squits the balloon and it pops.