[stormhill]

How bullet-proof are these things?
Seems like any sharp lawyer should be able to tear through one.

[Palio di Siena]

There are rules and precedent in case law regarding pre nups.
The main issue is that there can have been no coercion or duress in getting the other party to sign.
Most lawyers will tell you a properly done pre nup is solid.

[PistolPaknMama]

How bullet-proof are these things? Seems like any sharp lawyer should be able to tear through one.

A sharp lawyer can make one bullet proof.