Punch - Purple Sink Drink

[Chowhound]

WARNING: When in the military, some of us did some crazy things. The original name of this party drink is not used because it would offend some people so we are using a generic name. This was made for a LOT of people and mixed in a clean kitchen sink with a stack of paper cups along side. We DO NOT recommend you make this in a sink; keep it clean (sanitary and safe) and put it in a punch bowl.

1 qt vodka
1 qt bourbon
1 qt rum
1 qt gin
1 qt purple, pure grape juice
3 qts ginger ale
Big punch bowl
Large chunk of ice
Stack of paper cups

This sneaks up on you so be careful.