This is an ironic statement. Michal means the opposite of what she said, and she does not believe David acted honorably. Michal speaks disrespectfully to King David about his dancing attire and behavior. (See: [[rc://en/ta/man/translate/figs-irony]])
Here "eyes of the slave girls" represents the slave girls. Alternate translation: "in front of the slave girls" (See: [[rc://en/ta/man/translate/figs-synecdoche]])