Means to do the speed limit and follow traffic laws on I-35 in Austin, Texas, but could also be through Dallas and other large cities in Texas that 35 runs through. Cops give a lot of tickets on I-35 in Austin, and do car searches once they have you pulled over.
Friend: "U best respect 35"
You: "I'm only doin 10 over"
Cop: "May I see your license and insurance? You got a ticket for speeding, now get out tha car n let me search that shyt!"
Friend: "I told you to respect 35"
by Chelle_254_281 February 14, 2011
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