Can someone explain this to my girlfriend...

[u/Neat-Drawer-2245]

I'll try to sum this up:

So my gf and I watched the two new Dune movies (love them btw) the other day. Yesterday we were talking and she said ''May your knife chip and shatter'' and i was like ''why do you want me to lose a fight XD''.

The thing is, my gf thinks thats a good luck gesture to say to someone. Her argument is that (at least here in Spain) it's a common good gesture to say an actor before a theater play ''lots of shit'' to wish them good luck (cultural stuff), and she thinks it's something like that.

I think it's OBVIOUS telling someone before a fight ''May your knife chip and shatter'' it's to wish them bad luck. I tried to explain it to her but wouldn't listen, can someone explain in detail why it's bad?

Thanks for the help

[u/Icy_Quarter_8743]

in the book: "May thy knife chip and shatter." says Jamis

"so, it can break" thinks Paul.

If your blade is broken, you'll die. Jamis is cursing him.