Young man making the O.K. sign. (Photo by George Marks/Retrofile/Getty Images). Circa 1950s

People in costume as a Minecraft bee (left) and Crying Child from Fright Night at Freddy's 4 (right) at the Sheffield Anime & Gaming Con at the Mercure Sheffield in London on Sunday, September 17, 2023. (Photo by Danny Lawson/PA Images via Getty Images)

Dalmatian pelicans jostle over a fish meal on September 9, 2021. Every year about 100 of the birds fly to feast at Lake Kerkini, central Macedonia, Greece. (Photo by Peter Bradley/Solent News & Photo Agency/Solent News)

Larsa Pippen leaves little to the imagination in a VERY racy warrior costume as she joins Shanina Shaik at Paris Hilton's Halloween bash in Beverly Hills, CA. on October 24, 2019. (Photo by Backgrid USA)

American rapper Megan Thee Stallion performs onstage during the EA Sports Bowl at Bud Light Super Bowl Music Fest on January 30, 2020 in Miami, Florida. (Photo by Frazer Harrison/Getty Images for EA Sports Bowl at Bud Light Super Bowl Music Fest)

American YouTuber, model and singer/songwriter Erika Costell (R) out and about in Los Angeles, USA on December 31, 2019. (Photo by ROGUT/starmaxinc.com/Rex Features/Shutterstock)

American actress Megan Fox and American rapper Machine Gun Kelly are seen at the annual “Casamigos” Halloween party on October 27, 2023 in Los Angeles, California. (Photo by Rachpoot/Bauer-Griffin/GC Images)

Everyone wants to get something for nothing - whether it's a lucky upgrade that means you can turn left when you get on a plane instead or heading off into the economy seats, or even getting a few extra features thrown in for free when you buy a new car.

As some of the sharpest businesses around, no-one understands this quite as well as casinos and that's why they all have a system that they call comps. It's short for "complimentary offers" and these are special treats specially designed to reward you for your loyalty to the casino in question. They're basically bonuses.