"Birthdays was the worst days / Now we sip champagne when ..." (The Notorious B.I.G. – Juicy) | accepted

There’s also a link between these two lines. Champagne represents celebration (i.e. birthdays) and is used only on certain occasions. Biggie is beginning the transition of saying that his life went from a negative one to a positive one…

Wiz Khalifa – The Race | accepted

3rd line in Verse 1: (there’s no “that”… it’s just “Know some will say Life’s a bitch”)
4th line in Verse 1: “I’m [KEEP] flirtin'"
8th line in Verse 1: "Look at my ring, if I ain’t ballin’ [bitch] then what you call that”

6th line in Verse 2: My dime PIECES only recognize the best trees

Add [Hook:] at the end

"We the best!" (DJ Khaled – All I Do Is Win) | accepted

To goondick: except in the remix

"I like the sound of that, yeah, it's got a ring to it don..." (Eminem – Mockingbird) | accepted

He’s talking to Laney about how he (“daddy”) is still here for her, as well.

“It’s got a ring to it” means that he likes the sound of him being the dad in her life.

"Cause daddy felt like a bum, see daddy had a job / But hi..." (Eminem – Mockingbird) | accepted

When he started rapping, he also held a minimum-wage job of cooking and dishwashing at the restaurant Gilbert’s Lodge at St. Clair Shores, which goes to show that he was trying to make a living for his family while trying to make it big in the hip-hop industry.

(Source: “Whatever You Say I Am: The Life and Times of Eminem” by Anthony Bozza)

Eminem – Mockingbird | accepted

In the second verse…
“Cuz daddy felt like a bum” (not bomb)