Former UK' Love Island star Megan Barton Hanson stripped for OnlyFans in November 2020. The star has made a fortune stripping on her OnlyFans website, where it is estimated she earns up to £800k a month. (Photo by Ochiuk/Chilli Media)

American rapper Saweetie and Quavo seen leaving Boa Steakhouse in West Hollywood, CA. on July 19, 2020. The couple appeared to enjoy dinner and posted a pda filled Instagram story at the restaurant. Saweetie and Quavo looked stylish as they made their way to their car. (Photo by Backgrid USA)

Students from Cambridge University in England make their way home along Trinity Lane after celebrating the end of the academic year at a May Ball in Trinity College on June 18, 2019. (Photo by Joe Giddens/PA Images via Getty Images)

Cardi B looking stylish as she leaves the Warner Music Grammy party in NYC on January 26, 2018. (Photo by Splash News and Pictures)

A vervet monkey walks over a parked car in the Park 'N Fly airport lot which lies adjacent to the mangrove preserve where the monkey colony lives, Tuesday, March 1, 2022, in Dania Beach, Fla. For 70 years, a group of non-native monkeys has made their home next to a South Florida airport, delighting visitors and becoming local celebrities. (Photo by Rebecca Blackwell/AP Photo)

Wild Thang, a Pekingese competing in the 2023 World’s Ugliest Dog Contest sits in the waiting kennel before the start of the annual World's Ugliest Dog contest at the Sonoma-Marin Fair in Petaluma, California, on June 23, 2023. Scooter was the winner of the 2023 World’s Ugliest Dog Competition. (Photo by Philip Pacheco/AFP Photo)

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.

Apple CEO Tim Cook discusses the new iPhone 6 and iPhone 6 plus on Tuesday, September 9, 2014, in Cupertino, Calif. The iPhone 6 will have a screen measuring 4.7 inches, while the iPhone 6 Plus will be 5.5 inches. (Photo by Marcio Jose Sanchez/AP Photo)