"Fuck swag and your kicks from South Japan" (Slaughterhouse – Our House) | accepted

Royce also rejects the word in The Reunion http://rapgenius.com/223627

"[Hook]" (Eminem – Drop the Bomb on 'Em) | pending

It’s an interesting addition, but the placing is inappropriate. Maybe you should insert the tabs in the comments column after the song lyrics, or somewhere else but it’s not an explanation and it prevents us to explain the verse. Please fix this.

"Excedrin" (Eminem – Drop the Bomb on 'Em) | pending

You are actually right. I have the original CD and have just checked the lyrics in the booklet: they read as you suggested. Unfortunately (due to some Rap Genius reforms I believe) I don’t have the authority to accept your suggestion or change the lyrics. I hope the one authorized will do so.
Props for the observation though!

"Nothing high class in my glass, only bottles I pop / Are ..." (Pink – Here Comes The Weekend) | accepted

Good explanation. We could add that bubbly means champagne and here’s a pic of Diddy advertising Ciroc vodka:

"But when it's all said and done I'll be 40 / Before I kno..." (Eminem – Drug Ballad) | accepted

I have listened to this song on his 40th Birthday. It really did happen before we knew it…

"I'm doing my best to make my dick sit still" (Slaughterhouse – Place to Be) | accepted

These rymes may be influenced by the following lines of Eminem’s verse from the Shady 2.0 Cypher: http://rapgenius.com/401646

"If you can hear this sound in- / -side my head sounds lik..." (Slaughterhouse – Our House) | accepted

I think he also suggests that his thoughts (bullets) are following each other as fast as real bullets in a drive-by shooting (a sound also playing in the background of the song).

"It's like Clash Of The Titans / I released the cracker" (Slaughterhouse – Our House) | rejected

It’s the second time he compares himself to the Clash of the Titans: http://rapgenius.com/19506

"Rap is the only thing that I was ever really, bad to the ..." (Slaughterhouse – Our House) | accepted

He already stated this in Rain Man

"That bothered me, but I never wanna show that / Just don'..." (Slaughterhouse – Our House) | accepted

Because the first thing he puts on is the mask