Dialog 1 add up [ つじつまが合う ]

Yukio:Billy Bob and Bertha are suddenly getting married.
Angela:Yeah, I know. They haven't been together for very long. It doesn't add up.
Yukio:Well, Bertha is going to have a kid in about six months.
Angela:Oh, I see! Now, it adds up.

Dialog 2 pull the plug [ やめる、打ち切る ]

Yukio:My plane ticket to Prague cost over 250,000 yen.
Angela:Wow, that's pretty expensive. But I'm sure the service was good, right?
Yukio:Check this out, they've pulled the plug on giving passengers free drinks, blankets, and pillows.
Angela:They now charge you for those things?! You would think that they'd be included in the ticket price!