“Can’t beat that” means that it is the best You can’t beat the Beatles. They were the best group ever You can’t beat a long soak in the bath when you are tired. “Can’t get a word in edgeways” means that the other speakers are not giving you the time to speak. Also “edgewise”. I tried to make my feelings known but I couldn’t get a word in edgeways. Everybody was talking so much that I could hardly get a word in edgewise. “Can’t hack it” means to be unable to do something. He can’t hack being in charge. He goes into a panic. If you can’t hack it, let me know and I will help you. “Can’t hold a candle to” means to be much less good than. When it comes to selling, John can’t hold a candle to Mary. The movie is OK but it doesn’t hold a candle to the original version.