Imagine this picture:
All of the family is gathered around as the birthday candles are lit. Singing commences and you watch in horror as the candles rapidly melt wax all over your beautiful creation of a cake. It seems like ages before the candles are finally extinguished. You try to scrape off the wax dripped here and there, making an even mess.
Avoid this scene ALL TOGETHER by freezing your candles beforehand. This will prevent them from melting so rapidly and will spare your cake!