One of the more memorable friends through coding is a guy I met at 9am at what had to be an early lecture with 150+ students. We were both following it as part of a minor but the only ones there: we apparently didn't get the message that it was cancelled because we were no majors...
We decided to just work on the group assignment because why not and became friends.
Little did we know that we had already met dozens of times (but never really talked) the two years before as we are both members of the same students association, only strengthening the bond!

Sometimes not receiving a notice of cancellation is not that bad...