Toliet paper bed

When I was staying at the hostel, i switched rooms about three times. the first time was beacuse I was in a room with 9 other korean guys, and most of my friends were in another block of rooms so I switched. Then i switched from one room to a room down the hall, because there was a bed available and it was just going to be me in the room for 2 weeks. So, the last room that I moved into, my friends paul and el double room was just off my room. one night to welcome me, they decided they were going to toliet paper my bed