Two oxen were to carry sacks full of wheat to town. They were tied to a cart which was to hold the weight as the pulled. But the wheels of the cart were squeaky and noisy. As they were dragged across the cobblestone road, the air around the oxen was filled with noises, making the strenuous job of pulling the weight even harder under the summer sun.
Finally, annoyed by the noise, one of the oxen shouted out, “Oh what are you making noise for? We are the ones doing all the work.” with that the poor animals continued to pull the cart through the muddy road as the wheels continued to complain.
The ones who suffer the least complain the most.