A baseball term, used when a batter hits a line drive so hard and straight that it looks like a pissrod. A pissrod is a boner (hard-on, chubby, stiffy, etc.) created by one needing to take a piss. Therefore, the straighttrajectory of the ball looks like a boner, or a pissrod.
When one person pushes another's balls in a vagina or butthole with the head of his penis. Like a helping hand. To feed in the balls with the head of anothers cock.
Often used as a term of derision by ricers for domestic V8 engines that are "overhead valve" designs with the cam inside the engine block as opposed to the cylinder heads.
Despite being a pushrod engine, the 5.0 has been modified to rev as high as 7000RPM and still pull strong at that speed.