chicken hatch

The act of poking the head of a flaccid penis down into the skin around it and while holding that position, grabbing the skin of the scrotum and pulling it up over the spring-loaded tucked penis head. The finished product will look like a shiny egg-of-skin. (if hairless) Then, when you let go... yell “Bwak Bwak, Chicken Hatch!” And watch the penis slowly spring forth from its “egg” as if being hatched.

We used to do this as pre-pubescent children! Loads of fun! hahaha
This may only work for "growers" , not "show-ers"

chicken hatch