ObTopic - The topic you get dragged back to after someone goes on a wi

The topic you get dragged back to after someone goes on a wild, unnecessary tangent.

'We were talking about the best pizza, and now it's about your weird obsession with your neighbor's cat's hair.'

'You started a debate about the best movie, and now it's about your weird cousin's dating life again.'

'We were discussing the game, and now it's about your weird habit of talking to your plants and your neighbor's dog.'