Can Someone help me understand this?

[BumShiv]

Im not really sure what these lines mean in all she wrote when he says

"man I still say K-mart’s like theres an apostrophe-S on it dog
and they say McDonalds isn’t a restaurant well I guess I’m wrong
but if you gon tell me that the A&W aint the spot for the best hot dogs you can get the “F” on dawg"

Thanks!

[BumShiv]

thnx