The Witcher 2: Assassins of Kings -
"Several men in camp are searching for their drunken friend Odrin. You'll find him down the beach from the seaside gate. Carry him back to camp and bribe the guard to let him in. Drag him to all three of his friends. They'll reveal an important secret over beer at the canteen. Ask what would happen if all the ants got together, and tell them you need some information.