A Punny Shelf-Study

(I am well-known for liking puns but also tend to be quite gullible. My brother comes into my room and begins to talk to me.)

Brother: “One of my books fell down and hit me on the head.”

Me: “Which one?”

Brother: “I only have my shelf to blame.”

Me: “But whi-”

(Realisation dawns upon me and I stand up, picking up the nearest item of clothing on the floor, which happens to be my nightie, and begin to hit my brother repeatedly with it.)

Brother: “You liked it!”

Me: *leaning against my bedroom wall and laughing* “Yeah. I did.”