To squib something means to do it quickly and not very well.
Squibbed can make people think of doing things in a hurry and not doing them right.
Examples:
He squibbed his homework and got a bad grade.
She squibbed the drawing and it didn't look good.
The cook squibbed the dinner and it didn't taste good.
I squibbed my science project and it exploded!
The builder squibbed the house and it fell down.
She squibbed the test and got all the answers wrong.