Janeway once stole coffee from the Teacher's Lounge. (That might just be in my head canon, though)It's perhaps worth remembering that even the sainted Jean-Luc Picard got stabbed in a bar fight when he was a cocky young cadet, and that Jim Kirk hacked into the Academy computers to tamper with the Kobyashi Maru test.
There's a long tradition of future Starfleet legends getting into trouble in their rash, impetuous youths.