There's obviously a conspiracy between Sainsbury's and Transport for London. In Blackheath a couple of blokes were thrown off a No 89 bus for snogging:
http://www.bbc.co.uk/news/uk-england-beds-bucks-herts-29688461
Among the bus driver's offerings:
"Oi, you two, don't do that... or you can get off."
"It's my bus, it is my rules, and I don't want to watch that. It's disgusting. Get off the bus'."
Ken Davidson, TfL's head of bus operations, said all customers had the right to use the service "without fear of being abused and offensive behaviour is completely unacceptable".
A steward's enquiry is under way. Hopefully it will establish whose behaviour was the most offensive.