Why did the plane crash?

Because the pilot was a loaf of bread. His name was a loaf of bread. The plane was also a loaf of bread. Unfortunately the atmosphere was also a loaf of bread so when the loaf of bread crashed into the loaf of bread the loaves of bread fell out of the loaf of bread, through the loaf of bread and onto the loaf of bread. The impact of the loaves of bread onto the loaf of bread sliced the loaves of bread. The first slice of bread says to the other slice of bread, "I lied about the loaves of bread." The remaining slices of bread were found lying dead in the loaf of bread next day. The loaves of bread first searched the loaves of bread for a loaf of bread. Then they searched the loaf of bread. Then they searched the loaf of bread and there was no punchline. I lied about the punchline.