Yes we invented it!
After our hugely successful greetings/hello tour of the town (even bagging a couple of dates, but not going as we didnt have a clue where the place was we were suppose to meet) we moved onto the early form of instant messenger!
Basically it was massive a4 sheets of paper in N’s place starting conversations, someone opposite joined in and the conversation went on.
Sadly for us, being of a naive age, we forgot the fact that everyone along the street could also see the messages! N’s mum was soon on our case…..