case binding
Case binding is where you have a hard cover with soft pages inside, just like a smore where there is biscuits on the outside and a soft marshmallow on the inside.
John: "that's a nice case binding you got for your sex life files."
Bobby: "cheers John. I keep them under the pillow so I can fap over them at night"
Bobby: "cheers John. I keep them under the pillow so I can fap over them at night"