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1. Interstate 405, which runs through southern California and Los Angeles.

2. called “the 405”, central Oklahoma and especially Oklahoma City. So called for its area code.

3. 405 "Method Not Allowed", an HTTP error code.
1. The 405 has archetypal bad traffic.

2. Back in the 405, we used to have it so good.

3. Um, John, why is there a big 405 on the screen?
405 by tangles10 September 12, 2010
Related Words
I be reppin' da 405 son.
405 by Kaiyo November 4, 2003
from the http error message 405 "forbidden"

Often means "over the line"
Stop man, that room is 405

You take that back fo' that was 405
405 by Da Zeg January 8, 2005
the most poetic 3 digit number ever. It's perfect imagery and makes you think of those moonlit nights when you just feel so tired that you feel so great and the lights are just perfect.
405 by bengibbard March 21, 2009
a cool bus that drives around town and picks up ppl
here comes the 405

here comes the bus 405

man that 405 is cool
405 by 405 September 13, 2004
The new bar for the bench press. Why don’t they make bars that weigh that much? Lightweight baby.
Nobody: My grandma just died
Me: Well I bench 405
Nobody again: 405 is nothing bitch my dead grandma benches that
405 by Urban Dick In The Air September 1, 2022