Back in my college days a friend of mine lived in a house just off campus. It was a big 2 story house with like 5 guys living in it. Since it was close to campus we used to hang out there all the time. As with houses like this people came and went all the time. The previous year a woman had lived in the house. She left behind a stash of naked guy mags. Don't remember if it was Playgirls, or gay porn, just naked guys.
My friend is going home at the end of a semester, taking his laundry home for his mother to do. He had a clothes hamper. He would load the whole thing into his car and take it home. One of us hit on the idea of putting some of the nudie guy mags in the middle of all of his dirty clothes, knowing he would never see them, but his mother would find them. Which she did.