Aagblog has a piece called
In a Velvet Glove which accounts the details of a fingering session gone full fist.
She couldn't quite tell why this particular session felt so good, something she'd never quite felt before. She guessed it was 3 fingers. But she was wrong. He'd popped his thumb inside as she sat up onto her elbows. "what
are you doing to me?"
Read the rest
here