If you have friends that frequently come home drunk or stoned, why not play a prank on them? Find out when they are going to be gone for several hours and come home in an altered state. Pick that time to make your move. The object is to take every bit of furniture and rearrange the marks house. One could always just move things around, but that wouldn’t be very creative. Use your imagination. Why not shift the contents of the living room around 90º. For example, if the marks TV is on the north wall and couch is on the south wall, shift them to the east and west walls respectably. Another option would be exchanging the contents of the living room with the bedroom. Make a map of both rooms so you can set both rooms up perfectly, then set the bedroom up in the living room and vice versa. The trick would be getting the layouts exactly like they were. That’s why I suggested making a map.

Don’t take anything or do anything malicious, just have fun with your friend. It may be a good idea to let the neighbors know what you are doing so they don’t call the police on you.

Disclaimer: This was just an idea, any damage or negative actions aren’t my responsibility.