Our Music teacher came in for most of it. We:
1. Stuffed the music room piano with screwed up newspaper.
2. Stuck sellotape along the front of the piano keys.
3. Wrapped paper around the clapper on the lesson bell.
Mr History, aka Desperate Dan, was another victim. Before he arrived for the lesson, we:
1. Swapped rooms with another class.
2. Turned every desk around to face the back of the room.
He was very disappointing. On both occasions he just told us to get back to our places and then began teaching the lesson.
Then there was the time we got our brilliant Chemistry teacher to spend half the lesson helping us search for someone's non-existent lost contact lens. If he cottoned on, he never said. This was the man who would let us into the lab first thing on Monday mornings to get the nail varnish off with acetone. Wonder what he's doing now?