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.