Fresh Like Us
The Swelly Express
Rajon Rondo is a point guard with the Boston Celtics so it's a direct reference to his position. RR is a very good player so what the rapper is trying to say i sthat you have a very good point.
Check Your Head
Popeye used spinach to gain an instant rush of strength. This beastie is saying that writing rhymes gives him the same type of rush.
Dead and Gone
saying that it is ordinary in his hood (place where he lives) to make money (mostly through drugs) and gambling (for money or drugs)