Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How do you pierce the egg?
Document: Simply turn to right or left for pierce to show. It looks like a prick for diabetics. It also contains a little spoon-like device supposedly for decorating and playing with which clicks into it's own little home between the wedger and the slicer. It looks to be a very sturdy tool with many uses.1-25-12:  I used it over the weekend. Even better than I expected. Very sturdy. Love the 6-slice wedger.
Not as ideal. The large size of eggs can't fit in either of the egg stands.
Well my mom loves it. Does the work just as expected and I can tell you the egg tastes better.
I like the Egg Slicer Wedger Piercer because it is convenient and fast to use. it also easy to clean up .
It's an egg slicer, not a whole lot more I can say. It works great, got here pretty quick, and without an damage.
We have tried several other egg slicer/wedgers, but this is the first one that my wife has definitely stated, &#34;I love it.&#34;
This was inexpensive and worth it. However don't buy it if your main goal is to easily slice mushrooms. It doesn't do well at all. Egg slicing is perfect, though.
Perfect match with the Egg Boiler. Slices are just right for garnish or eating with toast. Arrived just as advertised. Quality and value are wonderful.
I was looking for an egg slicer and got a bonus with this handy little gadget. Very satisfied, great for egg wedges and slices.
Great egg slicer and wedger. Careful of the little round pin hole maker. I didn't know what it was and pressed in. Ouch! Works perfectly
Answer: The button-looking part on the front of the unit has a needle which, when you press down with the egg, pops out a needle that pierces the shell.