What does this mean?

Question

"Randsack your asthma"

and

"As day breaks swaggers in"

Answer 1

Notice that the artist is using a lot of colloqualisms/ rapping for purposes of rhyme and rhythm. The idea is that the addressee is urged to hurry, the end is near hence get along, the odds are against us, fat chances are getting slim, hence be creative, demonstrate it. Daybreak is near, (this is a metaphor for impending change/end) hence dance to rap, be creative and show your talents (demonstrate it).
As 'day break swaggers in, therefore, means, as the day sets in (takes over night), . . . . I lose to watch you win. Notice the personification.

stand back ya haveta
Rap times are crackin
Randsack your asthma
Ladies trends

You have to stand aside lest 'rapping' chokes/infects/ransacks you as with asthma. Again the word is ransack.

Answer 2

That's interesting! Although I would need to see the entire poem to tell you exactly what it means. The lines of a poem all tie in to one another, you take one by itself and it can be a number of things. You should post the entire poem :)