Minsc had just wanted something to eat! That's all. He thought he could be stealthy about it, too, but there was a reason he was a ranger and not a thief. Spotted easily and remembered well for his size and ability with a kitchen tool (tool, Minsc, not weapon), he was very quickly harried into more kitchen work.

Curses! Boo didn't seem to mind, though. He was much stealthier than the human.