Define Streets Behind Meaning

Streets Behind
Uncool or unhip; behind the times. As seen on the TV show "Community."

Pierce: "Streets ahead" is verbal wildfire.
Annie: Does it just mean "cool," or is it supposed to be like "miles ahead?"
Pierce: *sigh* If you have to ask, you're streets behind.
By Chlo
Streets Behind
If you don’t know what streets ahead means, you are streets behind.

By Doria