Shitty pillow case

When your flatmate breaks in to everyone's room to leave shits in mysterious places, you then respond by taking a shitty pillow case and beating them with it. Thus a shitty pillow case

Had a right shitty pillow case roommate moment last night.

doo doo on the pillow case

The song of discovering an unwanted gift on your pillowcase;bedding

David: Doo doo, doo doo on the pillow case

Amy: You is nasty, David!