And when the cops came through
Me and Dre stood next to a burnt down house
With a can full of gas and a hand full of matches
And still weren't found out (right here)

from Dr. Dre (Ft. Eminem) – Forgot About Dre Lyrics on Rap Genius

Meaning

There was overwhelming evidence that Slim Shady and Dre caused the fire yet the police didn’t find out they were guilty. This shows that Shady does not give a fuck and that even after 11 years the cops still are redneck, white bread, chickenshit motherfuckers.

In the music video, a skit precedes this line where a news reporter is interviewing Eminem about suspected arson.

http://youtu.be/E5a93wABHNM?t=2m3s

To help improve the meaning of these lyrics, visit “Forgot About Dre” by Dr. Dre (Ft. Eminem) Lyrics and leave a comment on the lyrics box