It depends on the occasion!

• With lunch and dinner: Water or soda
• Breakfast and post-workout: Protein shake
• Snack or night tea (I don't know how do you call the meal between lunch and dinner, at the afternoon; here in Argentina it's called "Merienda"): Smoothie
• At parties: Vodka, Red Bull, Champagne

I think I don't forget anything! All those are my favourites.
Hope someone read my answer! lol
Nice contests!
Huge hug from Argentina!