Waaaaay back when I was at Polytechnic I discovered that ^S in text would dump the BBC computers we used as terminals back into BASIC. Even better I found the codes to change screen mode. Nothing says 'ha ha!' better than dumping some electronic engineer (programming was only a small part of the syllabus back then) into Mode 2 and BASIC.
Although if we found someone who wasn't using a password creating the files '*' and '-rf' in their home folder would eventually teach them a valuable lesson.
For the record I'd like to say that was back in the 1980s when I was young and stupid. I am no longer young :-/
Biting the hand that feeds IT
