[lucb1e]

I don't understand the lead pipe analogy. What's up with getting a metal pipe if you don't "agree to keep this secret"?

[Groxx]

It's just one of many tools commonly used in the https://xkcd.com/538/ meme.

[lucb1e]

Oh it's a way of saying "killed", or at least that something inconvenient will happen for/to you. Got it

[bigiain]

See also "Rubber-hose cryptanalysis"

https://en.wikipedia.org/wiki/Rubber-hose_cryptanalysis