when the price for something is sky high, because the manufacturer knows you need it and have no choice but to pay for it. stems from gas stations on highways in the middle of fucking nowhere who charge $10 for a 2 year old microwave burrito because they know the next gas station is 150 miles down the road.
Person 1-"Man, I paid $50 for 3 gallons of gas, a pack of gum, and a soda last night at this gas station in bumfuck Egypt"

Person 2- "Talk about highway robbery!"
by One1ove719 January 31, 2010
to expensive, not worth the asking price, to much , ridiculously high,
It was highway robbery for the price of the concert tickets.
by Kennith Curnutt July 5, 2006
Extortion, extracting value from legitimate business transactions/operations while providing little to no value, simply because you can. Doesn't come from modern highways, comes from 'highwaymen' who would threaten travellers and merchants on 'highways' (any kind of road up until the 19th century) and demand payment for use of the road, even though it was not theirs to demand a toll on.
These mafia-type guys came to my store and demanded payment for 'protection', it's highway robbery.
My rent is highway robbery, it's gone up way too much and the landlord is threatening to kick me out otherwise.
by jimbobfrites June 15, 2021
When a guy or girl is bringing someone back to their place for sexual intercourse and someone manages to take them away from that person for their own pleasures.
Ian pulled a highway robbery on AJ.
by MU3West February 21, 2011
When one guy gives a handjob to another guy while they both ride on a motorcycle on Route 30 in PA
Guy 1: "Dude, you should change your name to Jesse James with your awesome Highway Robbery skills"
Guy 2: "Thanks man, I like giving HJs"
by The Tamboureenz2 December 10, 2010
When one is given oral pleasure while driving
"Last night on the way to her parent house, we did some highway robbery"
by decompresion January 4, 2008