They are doing Quality Control.
Mom is a quilter
Her quilt needs my approval
I must lay on it
Seven is QC
Approving quilts is her task
Hair removal mine
I've had several Quality Control Cats. One time Fluffy was asleep in the bed room when my mom was over. I brought several quilt tops into the living room and before I got the first one shook out, she was under it! Seven is my current cat. When I have blocks laid out on the floor, or more recently a quilt top since I now have a design wall, if she doesn't lay down on the quilt blocks/top, I know she doesn't like it.