What DON’T they argue about.

Yes, but idk they argued about pretty much anything. One of the worst arguments I remember them ever having started over my brother's birthday cake getting shook up in the car ride home from the store

It never seems to get to a full argument. But they do verbally joust from time to time. More often during lockdown though.

No

Yup. All the time. They have this superpower to argue about any stupid subject. I mainly blame my dad though. He's an asshole that can drive my mom [or any other person for that matter] mad.

Not often but it happened and sometimes it was a real fight. My grandparents argued pretty much every day.

Yes - lying, cheating, thiefing etc

My mum clinged often to totally false assumptions and the respective wrong measures which drove my dad crazy. It did cost me much nerves to calm the waves and direct my mum to more reasonable measures, while my dad was so stubborn to ignore mum was missing social and other activities which often was the reason for disputes.