My last ever Physics teacher, back in A-Level, was called Mr Rockett, so we had great fun with his name and the subject he taught (there was even a sign in his classroom saying "it's not Rockett science"...). And he was something of a joker himself, trying to make teaching Physics fun for us all.
So, in our last ever lesson, I smuggled my mp3 player into the classroom, set it up with speakers, and played Elton John's 'Rocket Man' at the end of the lesson. As it happens, everyone found it pretty amusing, and a nice little tribute for such a great teacher

. I guess you could say we did it 'for the lulz'...
Otherwise, I tend not to do such things, though as I'm part of a film-making group you could probably count when we mess around on set and location, when filming...
