history: My coworker stole my presentation idea and claimed it was his! My coworker stole my presentation idea and claimed it was his_comma_ I can't believe it. WHAT? did_comma_ you have any idea beforehand_comma_  or he just showed up with your idea.
current: He showed up with my idea so not only was I so mad but embarrassed to because it looked like I stole from him!
next: OH no! I didnt even think about that.  That must have been terrible.