It’s got the general consistency of muscle. So it does jiggle, but you would probably not be able to push your finger through it, at least not easily.
Think of how a big hunk of steak feels (or even your butt at rest), it’s pretty jiggly and squishy, but you’d have a hell of a time piercing it just just a finger.
The gel doesn’t account for skin though (which is designed to resist some piercing), so that is a more significant difference.
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