Hey, thanks for answering. :)
No, unfortunately it's "IN the stain" (it's an author from New Zealand, I've just copied his sentence).
The person who's talking is a man, Alex's husband. Their son was slowly eating an ice-cream, so it melted and now he's thinking about his wife reaction.
Knowing that this sentence makes no sense is cool!! It doesn't make any sense to me, but telling that to my lecturer the day of my exam is a suicide. ;)
Mmm, I think I'm going to pretend there's an AT!
Student or Learner