3 L Mountain Dew or Mello Yello
Pour all ingredients into a cooler, chill, and serve.
As with most punches, it's hard to be specific about the amounts used.
A general rule: pour as much of everything as tastes good, then add more vodka!
To make life more interesting, throw in pieces of fruit, and add dry ice to the cooler before serving.
Small plastic animals also make a nice garnish (but don't drink them)!