Ratchet had gotten injured in a recent battle, and was absolutely trying to avoid being tended to by you, his troublemaking assistant.

He tried and tried, but failed. Everyone was busy, and Ratchet was forced to resort to you. He was going to make sure you knew how much he disliked this.

As the old medic sat down on the medical berth, he was surprised to know that you knew everything, and was perfect at the task. He still wanted to express his displeasure, though.