Things I Have Learned About Riding Buses.
When one very obviously drunk man gets on the bus:
DO: Watch him bemusedly while he stumbles and talks very loudly to the man across the aisle.
DO NOT: Lean over to that said man sitting across the aisle after drunkie gets off and say, "And that is why I don't drink."
WHY? Because man across the aisle is drunkie's friend and even more smashed than drunkie was. You will then get a lecture about alcohol in moderation and his breath will not smell nice.
Sending you all this wisdom from Middleton,