Last Chance If it was your (or your character's) last chance to do something, would you/they do it? What if they didn't know it was their last chance? What if it was their first chance?
Drop the books. Stub your toe. Trip over something. There are many small everyday incidents that happen that can create minor moments of embarassment for your character. Maybe she dropped her books on the toes of the new guy? Make an everyday embarassment an epic moment.
Freewrite break. Set your timer for fifteen minutes. Forget about your characters, plot, and setting for a bit. Take the next sprint and freewrite. Say whatever comes out and don't let your hands stop until fifteen minutes is up.
Rewrite a scene from a different character's point of view. How would he/she react differently? What was going through his/her mind at the time of the event?