One day there was a cat and a mouse. Both were friends and they shared a lot of things together. Then, sometime later, they were angry with each other because there was a lot of food left over. The cat said they would have a swimming competition and whoever who won would got the foods. Mouse said, "Ok! the lion will chose the pool for the swimming competition." Then it was race day. The cat and the mouse chose their swimming suits and they were on the starting line. The lion said, "1.2.3.go….." Both went. The cat said to himself, "I can sleep on the rope because the mouse is very slow." The mouse went passed the cat and won the race. The cat woke up and quickly swam, but the mouse had already won. 
Don't underestimate a weaker opponent. 