Marilla Bounce
The unpredictable bounce produced by the underclass tennis surface at the Marrila tennis courts. Known for many unforced errors and balls netted. Also the main cause for frustration and anger directed towards why on earth you can't get the goddman ball over the net when all of your mechanics are working for you.
Dude, why do you keep netting those balls? - It's not me its the Marilla Bounce.