The first thing that came to my mind when I heard the Gospel of the day (which narrates the episode where Jesus walked on water), during Mass was a joke I read long long time ago. Three friends were out on the beach walking their dogs and each one wanted to show off his pet. The first one threw a ball into the air and his dog did a sort of acrobatic jump and caught the ball high above the ground. The second one did something similar in a different but special manner. The third one threw a Frisbee into the sea and commanded his dog to fetch it. The dog calmly walked on the waters and retrieved the Frisbee. Turning to his friends, the last one said, "What do you say of that?" The other two looked at one another and said, "So, you are saying that your dog does not know how to swim?"