Swing Ya Rag Paper Trail T.I.
T.I. is referring to his Louis Vuitton handkerchief or "rag" that he "waves round in the air" when he's dancing. He then proceeds to do the same with his "gucci rag."
What We Talkin' About The Blueprint 3 Jay Z
this lyric suggests wannabe gangstas who pretend to be tough by showing their guns in video clips they record and post on video sharing site youtube.com are not actually dangerous, but are considered a joke (a real thug wouldn't record himself like that)
Just Rhymin' with Biz Long Live The Kane Big Daddy Kane
He believes his rhymes will never be forgotten or lost just like the Egyptian Hieroglyphics
They Don't Know The Peoples Champ Paul Wall
working hard every day to make and save up more money
1st of Tha Month E 1999 Eternal Bone Thugs N Harmony
Fifth is referring to a liqour bottle size, the 750mL bottle. To the dome refers to the inebriatory effects on the mind.
People Everyday 3 Years, 5 Months and 2 Days in the Life Of... Arrested Development
Expressing his desire for someone to raise the 'treble' (higher spectrum sounds), probably in addition to the bass being raised in order to avoid 'drowning out' the music with too much bass.