I don’t know how old your son is — my boys are 4 — but when they act up like that (occasionally, luckily not often!), the stuff THEY want, such as a little toy, or special bagels or whatever they asked for, will get left behind. No treats for naughty kids, and they know it. One day we went to Burger King (special treat for my kids) and one of them would not behave. So we took the food and went home and ate it there, instead of eating at the restaurant, which was what they both wanted. My “special snowflake” has NOT repeated the behavior that made me take him straight home. :) They hate losing special treats and privileges.
(And yes, I have “the look,” and while I only use the flat of my hand on a little behind, and usually only one time, I have “the spank” too! I have had many people comment on how well-behaved my kids are in public.) (Though of course there are moments like the one in Burger King! LOL!)
When my kids (boy 5, girl 3) act like that, I don’t give them special stuff. They were fighting over who got to pop the bubble wrap yesterday. So my wife sat them down side by side, and she popped every bubble... one... by...one.
He started saying “That’s not fair!”