The Airlock Incident
The reason Lord Kenobi spent an entire week moping around the Death Star is because one morning, we ran out of coffee. The shipment was an hour late.
During this hour, Lord Kenobi earned the title of Darth Rage due to the fact that he destroyed an entire floor's worth of mouse and serving droids, wounded two employees, and shot Lord Vader's favorite new droid (that he had just finished perfected making btw) out of the airlock and into a black hole, and Lord Vader refused to talk to him for said week.
Ever since then, Lord Kenobi is ONLY nice to Lord Vader before he's had his coffee, to avoid a repeat of the Incident.

















