Take turns rolling. Each number has its rule:

• 1 — hand out one sip.
• 2 — take one sip yourself.
• 3 — point at someone to drink.
• 4 — everyone drinks.
• 5 — make a rule for the rest of the game.
• 6 — set a challenge for the person on your left.

Play as long as you like, and swap rules as you go.