My boss keeps speaking in dialect and it's funny lol.

I'm a newbie in my third month! A new person joined the company, and it's hard because their way of speaking is hilarious lol. They keep making me try to hold back my laughter. I want to stop laughing too, but I end up giggling anyway lol.

The other day, I was coming back after getting scolded by the team leader, and they said, "What's wrong? You'll get a good night's sleep when you get home tonight~" so I laughed, and then the team leader glared at me. LOL. I don't know what to do about this, but it's such an addictive way of speaking that it's really funny.