Napoleon: Is that yours?
Kip: Don't touch it, it's Uncle Rico's.
Napoleon: What's it for?
Kip: It's a time machine, Napoleon. We bought it online.
Napoleon: Yeah, right.
Kip: It works, Napoleon. You don't even know.
Napoleon: Have you guys tried it yet?
Kip: No...
(Napoleon reviews manual, which shows positioning a t-framed apparatus between the legs)
Kip: So are you ready?
Napoleon: Yeah, hold on. I forgot to put in the ________, Okay, turn it on.
(Machine proceeds to zap Napoleon in the privates)
Napoleon: OH OH AHH AHH! Kills! My pack...kills!! Turn it off! Turn it off, Kip!
(Kip unplugs time machine)
Napoleon: It's a piece of crap, it doesn't work!
Uncle Rico (walking gingerly): I could have told you that.
You can validate your puzzle solution with certitude.