What's this useful kitchen gadget for?

Here's a really useful kitchen gadget used to prepare a dish that's still widely eaten today. I don't have one, but I feel I'm missing out, and I'm not sure how I've got this far in life without one. It's something every woman should have to keep her man happy, but what is it?
Whats this useful kitchen gadget for?
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22 d
It's a pie pricker made from a lamb leg bone.
What's this useful kitchen gadget for?
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