In Japanese, "good morning" is pronounced "ohayou" which is pronounced almost exactly like the name of the US state "Ohio."
In Sydney, the UDU attendees got a tour of Sydney’s harbor and heard about the time in the second world war that a Japanese submarine was attacked by the US warship Ohio in Sydney’s harbor.
I can imagine a moment of confusion as one crew member on the Japanese submarine sees the US warship coming and frantically wakes up his sleeping comrade by pointing at a porthole and yelling "Ohio!"
In a situation like that, a moment of confusion can mean the difference between life and death.
Too bad we started the tour at night. And the buses were heavily tinted. We were in the first bus and all we saw was darkness :)
Funny but neh…. Oh! hi! Oh! Godzilla masu!
Submarine portholes? That sounds like a design flaw…