Making a snail with your penis and balls by wrapping your penis around and under your balls making the shell and the penis head stick out looking like the head.
The phenomenon of when your penis retreats and (in the process) pinches all of the foreskin on its way down. This often happens while seated at the dinner table or in other situations where you can't tend to your pinch penis.
My pinch penis was really bad at the in-laws dinner table the other night!