Old High School Prank

I heard this story a while back. Someone in a Vermont high school decided to mess with the detention teacher one day. The guy opened up a cigarette, put 3 firecrackers in it, taped it underneath the detention room window sill, lit it, and left. A while later, the first firecracker went off. The teacher came out and looked for who did it. He didn't see anyone, so he went back inside. A while later, the next firecracker went off. The teacher came out again and said "Alright, who's messing around?". Once again, he didn't see anyone. So he went back inside again looking pissed. Finally, the last firecracker went off. The teacher was really ticked then. He looked around and yelled for whoever was playing with firecrackers to come out. Again, he found no one, so he went back inside. By the time he got back, 1 or 2 or the students had taken the opportunity to leave detention :)