[ti-] Timmy Turner is in the [4] bathroom of the [-_] house, where the light has gone out. He calls for someone to help, and two 夫 grooms enter 替 to replace the light bulb with a miniature 日 sun. Does it really take two 夫 grooms 替 to replace a light bulb with a miniature 日 sun? Yes, of course it does: one to hold the ladder, the other to install the 日 sun. But why didn't Timmy just wish for it to be 替 replaced, instead of bothering the 夫 grooms?