BASEBALL SIGNS

My eight year old nephew Joel is a second baseman. He wants to pitch.
Yesterday his dad taught him the basics: how to hold the ball for different pitches, how to keep an eye on the runner, and the different signs the catcher flashes when calling pitch selection.
After a couple hours, Joel was flashed a series of signs and told to name each one. Dad held his hand down and showed the forefinger.
"Fast ball!"
Two fingers were flashed.
"Curve ball!"
Dad was pleased. He then pointed his middle finger down, the sign for a brush back to move the batter off the plate.
Joel shook his head.
"What's the sign, son?"
"I don't know."
"We went over it. Now think. What's the sign?"
Joel shrugged his shoulders and stammered, "F#@k you?"

I think Joel's staying at second.