Gene and Phineas are down by the lake when Phineas decides that he wants to jump in the lake. While Gene is heitant he finally agrees with him to jump in the lake.
After breaking the school swimming record Phineas wanted to swim in the ocean. Gene, knowing that it would risk explusion and he has a test to do the next day, goes with him. They slept at the beach that night and had to hurry the next morning.
I predict that Gene and Phineas will join the military to serve in the war when they get old enough. They will join the military because everyone wants to do their part in the war and they are frustrated that they can't join cause they are underage but when they turn of age they will join.