Dad'ween
When you turn into your dad and your neighbor turns into their dad and you beat each other up for snacks.
I turned into my dad and my neighbor turned into their dad and we had a full-on battle for a bag of M&Ms.
My dad came out like he was a ninja dad and my neighbor came out like he was a pirate dad and they started a fight over a bag of candy corn.
I dressed up like my dad and my neighbor dressed up like their dad and they started a full-blown war over a single Snickers bar.