Lyric discussion by clovus 

FetusTree is not completely joking. “Back door” can be a reference to anal sex. However, a “back door man” is usually someone who sneaks into a house. So, if your woman is cheating on you, she is doing it with a back door man. I’m pretty sure “back door” is being used here in the second sense.

So, I think the line, “Is there a lock on your back door?” means, “Are you being faithful?” The song seems very desperate. Like he is in a relationship with someone he knows will cheat on him. It sounds like he’s always asking about it, but she won’t give a clear enough answer (“Tell me I’m wrong, Tell me I’m right.”). He wishes a doctor would just make everything in the relationship right.

In the end we have him knocking on the front door and someone else knocking on the back door. Which door does she answer? Given the pusillanimous nature of this guy, I’d suggest going for the back door.

@clovus I think you’re spot on. But the “tell me I’m wrong, tell me I’m right” could be the internal struggle a man faces in this situation where you want to know all details, but want it desperately to be wrong and not true.

An error occured.