Re: Don't feel so bad Ericsson, you probably did us all a favour!
I was on the tube one evening, about 8pm. It wasn't packed, but most seats were taken.
Everyone was doing the usual - reading the adverts, looking at their phones, trying to avoid eye-contact.
Then at one stop, 3 or 4 people got on.. Shall we say "in the party spirit"... They were singing, and talking to the rest of us, and cracking jokes with us, and goading us all into generally joining in.
The whole carriage joined in, and started cracking jokes too. Even when these people got off, everyone else on the carriage continued chatting, and everyone said "bye" when they got off at their stop.
Just needs an ice-breaker...