Laughing Bag

Why on Earth does the Laughing Bag make us giggle so much? Tap the side of this mystical little sack and the robotic recorded laughter just seems to override all logic and we can't help but laugh, too! Remember that weird little bag that Batman pulled out of the Joker's pocket in the first movie? This is it! Batteries not included. (Laughing Bag a.k.a. Laughing Sack, Laugh Bag, Happy Bag, Giggle Bag)