eavestalking - When someone jumps into a conversation like a dog at a park,

When someone jumps into a conversation like a dog at a park, just to sniff out all the juicy details

'I heard you say you're getting a new phone. What's the deal? Don't think I'm not watching you.'

'I'm not just here for the snacks. I'm here for the gossip.'

'I'm not going anywhere until you tell me what happened in that meeting.'