Add a subrule to rule 2.6 NPCs called “Robin Hood” with the text:

Whenever the dance is performed, than after it has finished, if the monkey in position X-1 (where X is the position of Robin Hood) has more bananas than Robin Hood, Robin Hood takes a banana from that monkey.  If the monkey in position X-1 had fewer bananas than Robin Hood when the dance finished, then Robin Hood gives them one banana.

Set Robin Hood’s bananas equal to A/B where A is the total number of bananas of all the active monkeys in the game, and B is the total number of active monkeys.

Unless three active monkeys have posted “Ook!” as a comment to this post, give Banana two bananas.

Robin Hood is a monkey - just a very highly evolved one.