"Oh"

*The phone rings*
"Hello?... What's wrong?"
*The person on the other end of the line talks forever about her current problem, "It is just so stupid", "I don't know what to do", "What happened when he went through this", Blah blah blah... Etc. And she kept pausing between them all for responses*
The person on this line just wasn't responding, so finally I stepped in and said,
"Say something!"
This is when she picked the phone up and said,
"Oh."
OH!! WTF!! HAHAHA!! That is all you can say, "Oh." Wow.
And to make it worse,
"Well we are leaving now and I have bad service but I will call you later, bye!"
Once off the phone the three of us in the car laughed our asses off!
Good times..
When we tried to fill the third person on the conversation they missed, this was said,
"It wasn't that short of an 'Oh', it was like two syllables"

?!?!?!?!?!?!?!?!?!?

Can someone tell me how "Oh." can be to syllables?!?

UH-OH!

XD