I would think the logistics would work out rather well. Benefit of surprise.
"Hey, why are you walking around on the street with that waffle iron? That's weird man."
*WHACK* "Now you know."
-----------------------------------------
In all seriousness, don't do the facebook scam. This is cowardly and foolish. Plans like this never work out as well or as cleanly as you expect. I wouldn't say it if it wasn't from experience.
Either return the favor by telling him off in front of everyone or via violence (not recommended, he sounds like the kind of person who will go crying to the cops when it benefits him), or prove to yourself that you're the better person by letting it go.
They'll get what's coming to them, sooner or later.