Definitions by Mike Hawk 420

Highway Hammer 

It is basically a sidewalk slammer but the main difference is that you put a Xan in the drink and you meteorically end up on the "highway". Any 40oz will do the trick but served best with Bud Ice.

Bro is that a sidewalk slammer?
*drops XAN in drink*
Nah man, it's a highway hammer now!

Highway Hammer by Mike Hawk 420 October 18, 2017