You know,"Gabriel said, "there was a time I thought we could be friends, Will.""There was a time I thought I was a ferret,"Will said, "but that turned out to be the opium haze. Did you know it had that effect? Because I didn't.

”

Gabriel and Will were having a conversation. In the conversation Gabriel said that he thought they used to potentially be friends. Will responded by saying that he thought he used to be a ferret, but he realized this was due to the effects of opium (a drug he was using). Will stated that he didn’t know the drug could have that effect on him.