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

Highway Hummer 

A blowjob given while driving at speeds of over 60-79 mph. Not to be confused with a suburban suck-down which would be conducted at speeds of 25-59 mph or a speedway suck job which would be at speeds of 80+ mph.

The distinctions are important b/c if pulled over in the act the ticket price declines with rising difficulty.

Had the salewoman, Lisa P, not given me a highway hummer during my test drive, I probably wouldn't have bought this used 1995 Dihatsu. Although I just bought it last week, I'm thinking of going for another test drive asap.

Highway Hummer by rbc December 10, 2004