oh okay

Expression of surprise, happiness, disappointment, or sadness (oh) in conjunction with "okay" (either earnestly or jokingly saying something is acceptable).

Usually follows a question with an unexpected (or expected but undesired) answer that the asker doesn't know how to respond to.

Asker: What did I miss in class yesterday?
Asked: Nothing, it was canceled.
Asker: Oh? Okay! (surprised + happy, actually okay)

Asker: Hey, you wanna hang out some time?
Asked: Why'd you think I'd wanna hang with you?
Asker: Oh... okay. (surprised + disappointed, not okay)

Asker: Hey, I heard you were under the weather yesterday. You feeling better?
Asked: Nah, I'm still feeling sick.
Asker: Oh, okay. (sad + not surprised, not okay)

Me: I need punctuation between the words for emphasis
Urban Dictionary: "Examples should include the word being defined"
Me: "oh okay"