Embarrassed? Why would you...

I'm looking for a natural and deeply sarcastic response to this:

I'm okay. I'm just a little embarrassed about my behavior the other night.

Would any of these work:

Embarrassed? Why would you be embarrassed?

Embarrassed? Why would you be embarrassed about your behavior?

Embarrassed? Why would you think your behavior was embarrassing?

Embarrassed? What was embarrassing about your behavior?