This episode has the first appearance of Dr Cox's ex-wife Jordan Sullivan (Christa Miller-Lawrence) she plays a hot board member with a lot of attitude. This character becomes one of the main supporting actors and is hilarious in the way her and Dr Cox bounce off of one another during conversation.
JD begins to hate her and when she packs up to leave JD is sick of being walked all over and makes a stand. After barking orders at her Jordan says "Nobody speaks to me like that" followed by "take off your pants", they have sex and as JD leaves the room Dr Cox speaks to him and mentions that she is his ex wife which JD had not previously known. This being the meaning of the title "My Bad".
This episode gives us a good insight into Dr Cox's personal life and shows us how much he misses his ex wife.