Eating marbles and gravel at the family Table

"I was eating marbles out of a bowl like they were grapes. Didn't question it. They were cold and smooth and I kept rolling them around my mouth before swallowing. My sister was across from me eating rocks. Not big ones. Gravel, basically. She was crunching them and it sounded like ice. She offered me some and I took a handful. I remember thinking the blue marbles tasted better than the clear ones. That's the kind of detail I woke up with. Blue ones were better. I don't know what blue tastes like. Then my mom walked in and said dinner was almost ready and we both said "we're not hungry" with our mouths full of stones. She said "suit yourselves" and left. I woke up and my jaw was clenched. Really clenched, like I'd been chewing all night. I sat up and checked my teeth with my tongue. All there. Went to the kitchen and poured a bowl of cereal and just looked at it for a minute before eating. Chewed carefully. Weird morning"