five knuckle sandwich

hands used in barehanded boxing aka fisticuffs

So, the gloves went off and we engaged in fisticuffs feeding ourselves five knuckle sandwiches until one of us saw stars
After the argument I just fed him a five knuckle sandwich

high five pyramid

When you do a girl from both sides and high five the guy on the other side while you're doing her.

Me and my boy gonna do a high five pyramid on her.