[prmph]

In my experience, breaking the script goes wrong more often than well.

First you need someone who actually appreciates you deviating from the script. Most people most times are not seeking anything "interesting" in the sense you might think it

[RetroTechie]

Would you enjoy talking to someone who does not like to have their curiosity peeked? (imho: probably not)

Also, if you'd notice that happening: a good sign you're wasting your time talking to that person.

In a good conversation both (or more) participants get something useful/interesting/funny out of it.

[picofarad]

It's piqued, like a pike is sharp, piquant, pique(d).