When you start hording items because you think you may need to build something out of them
I retrieved a box spring the other day and presented it to my girlfriend "This could be of use for a shotgun of some sort!" She was not ammused.
When you think of conversations as branching dialogue and speech/skill checks.
I'm surprised no one has said, "when you pronounce Caesar as Kai-sar." People give me a funny look. But I don't care, I will never pronounce it as Zee-sar ever again.
I am guilty of this... I work in the food industry and I
always pronounce caesar as kai-zar. Seldomly, as a happy accident, people know what I'm referring to and we proceed to talk about Fallout for the entirity of their stay.