Switcheroo is an episode of Series 4 of Bananas in Pyjamas aired on 12th November 1996.
They spend some time practising responding to each other's names at home, which proves to be quite difficult for them. When they feel ready to play their trick, they head over to the Teddies house. Unfortunately, the Bananas still end up responding to their own names, which they try to cover up. However, the Teddies soon realise the trick and proceed to try to confuse the Bananas even more in return. They ask the Bananas to help fix several items in the park, deliberately referring to them by name. The Bananas are soon very confused.While the Bananas get more and more confused, Rat walks by and says hello to everybody. However, he notices that B1 and B2 are dressing as each other and asks them why they did so. While the Bananas try to deny it at first, the Teddies reveal that they knew that the Bananas had switched names as they have been friends long enough to tell each other apart.