Curveball

[Couch Potatoe]

A particularly difficult issue, obstacle, or problem. Named after the equally tricky baseball pitch.

[Oralee]

A flash game online that is essentially an updated, 3D version of the classic Pong. Many claim to reach high levels like 12 or 20, but they are lies, as the source code reveals the highest level as 10. Based on online research, I am the only one who has ever reached level 10. But I have only done so once, and it is impossible indeed.

[Oralee]

A pitch which is doctored by the pitcher to make it have a bending motion as it comes to the plate.The pitch is thrown with a different grip than the fastball in that a pitcher wedges the ball in between his fingers and delivers the pitch as if he were slamming his fist down on a table. This creates topspin on the ball which makes air moving around it curve to the axis rotation of the pitch.
The only reason why the batter is the underdog in this game. ~Warren Spahn, Winningest lefty of all time

[Tina]

A person with a severe dick curve that often looks like a pitcher throwing a curveball

[Julene]

Having a bowel movement. (Number 2 is the designation for having to take a bowel movement, and it is generally the catchers sign for a curveball to be thrown.

[Dianne]

The act of farting in your hand and then wafting it to another.

[Dianne]

An extremely hot girl, SO hot that she in fact buckles your knees, much like a good curveball will do when it looks like its coming at your head and then the bottom falls out of it.

[Kai]

A delivery in which the pitcher causes the ball to deviate from a straight path by imparting spin.

[Becky]

Curveball in Baseball. A pitch that is thrown with spin that causes the ball to curve as it reaches home plate.

[Mary Mallozziberg]

in the sport of baseball, a throw in which the ball curves as it moves towards the player with the bat