Well... imagine if there was someone that you knew, who only talked about... let's say that they only talk about sheep.
And then in almost every conversation, where you were talking about something, they would mention sheep.
Like you could be talking about clones and the person would mention about Dolly The Sheep (Dolly's birthday was a few days ago btw).
And then you maybe would be talking about New Zealand and this person would mention the sheeps in New Zealand.
Would you find this annoying?
Well... I guess that I would be thinking "Oh, I learn a lot of new things about sheep because of this person."

