Lyric discussion by NothingMan 

Cover art for When Good Dogs Do Bad Things lyrics by Dillinger Escape Plan, The

This song to me sounds like it's about a guy who's found out that his girlfriend has cheated on him and he wants her to know what it did to him. The title "When Good Dogs Do Bad Things" goes with theme in saying that the guys girlfriend acted like an angel, then turned out to be a whore by cheating on him, completely destroying the image of her he perceived.

"I'm the best you will ever have You're the best I'll never have"

The guy thinks that his girlfriend was the best thing to happen to him and then realises that he'll no longer be able to look at her in the same light.

"Pain.. Gone. Rain.. Stop. Sun.. Shine. You're.. Mine."

He doesn't want to believe that this happened to him.

The next two lines ("Here kitty, kitty, kitty, kitty" & "MOMMMY, MOMMY, etc..") call forth his girlfriend and vent some rage, then send her running home to her mother.

"Listen: Listen through the walls The sound of quick footsteps sneaking down the hall Whispers The pages turning The leaking roof The toilet flushing Numbers on the license plate"

He's recalling when he found out that she was cheating on him. He came home and heard some noises upstairs or wherever, people whispering, a person running. "The pages turning" could mean that he realises that his life has just been changed, or it could have the same effect as the next two lines in that he hear's it amongst the sounds of his girlfriend and her partner freaking out because the boyfriend just came home. "The Numbers on..." would be the boyfriend seeing the partner running out to his car and seeing him drive off.

"I'm nothing more then The best you'll never have A speck on your bedroom wall A blood red waterfall"

Again, he's thinking that she's missing out on what could be the best thing to happen to her.

The rest of the song sounds to me like he's going through all of the memories he's had with her and the other assorted thoughts that are running through his head about the entire ordeal. It also sounds as if he has some rage built up inside and just wants to blow up in her face, let her know what she did to him, and then make her suffer for it.

He ends it by, as some others have said, breaking up with her in a diner. The last line shows that he's still full of rage and sorrow, but he probably realises that there's nothing he can do but move on.

Of course, this all just how I view the song. For all I know, it could be about something that has absolutely nothing to do with what I said.