Money in the Bank is a WWE pay-per-view which made its debut in 2010. It is based on the Money in the Bank ladder match (which debuted at WrestleMania XXI) where several wrestlers battle to retrieve the Money in the Bank briefcase for a future WWE or World Heavyweight Championship match.
"Tropes in the Bank":
The Artifact: Since the Brand Extension has ended, and every wrestler move between Raw and Smackdown, the briefcases still have the different colors. Since 2011 the red briefcase represent the WWE Championship, while the blue represent the World Heavyweight title.
Of course, since the title has now been unified after TLC 2013, it can be assumed that the case will go back to its original color of black.
The Bad Guy Wins: Whenever a heel wins the MitB ladder match. The 2011 MitB had Punk win the WWE Championship and jump ship.
Of course, in that scenario Punk is a designated "Bad Guy" at best, since he was wildly cheered on TV during the lead-up to match and Money in the Bank 2011 took place in his hometown of Chicago.
Colour-Coded For Your Convenience: Once it was given it's own PPV, and Raw and Smackdown had their separate ladder match for their respective brands title, the Raw briefcase was red, while Smackdown was blue.
Dangerously Genre Savvy: Punk was able to avoid a cash-in at the actual PPV by Alberto Del Rio due to this for three reasons: 1. He had enough to recuperate after his amazing match with John Cena, 2. Punk's the only man other than Edge to cash in the briefcase multiple times, and 3. Vince was calling for Del Rio right in front of him. End result? A kick and a goodbye kiss later, Punk has just left the WWE, one hour before his contract expired, with the WWE Championship, effectively sticking it to Vince McMahon.
Enemy Mine: Short team ups will happens to get rid of another person, but as soon as that deed is done, they will turn on each other, as Cody Rhodes and Damien Sandow soon found out when Sandow cheated Rhodes out of the briefcase during the 2013 event.
Et Tu, Brute?: In the 2013 edition, Punk had the ladder match won and was on his way to his third briefcase and a guaranteed shot at the WWE Championship, but was screwed out of it by his best friend Paul Heyman. No one was honestly surprised, and Punk was beating himself over the head because he knew he should've seen it coming but stupidly trusted Paul anyway.
Red Baron: The winner will be dubbed "Mr. Money in the Bank".
Running Gag/Kick the Dog: Not so much on the show itself, but, inevitably everyone who has gone on to successfully cash in his shot has done so immediately after a Champion has defended the title against somebody else.
Laser-Guided Karma: To the point that people who have cashed in the briefcase before now find the case cashed in on them. One notable case is Edge, the first man to cash in two MiTB briefcases, who had the case cashed in on him after a well-deserved beatdown by Batista...by CM Punk, who would later on become the second man to cash in two briefcases and the first and only man to not only win multiple MiTB ladder matches, but also consecutive MiTB ladder matches.
Start My Own: Money in the Bank was originally an event that took place at WrestleMania, and proved so successful that it was given its own PPV.
Wham Episode: The 2011 edition of MitB ended with CM Punk winning the WWE Championship from John Cena and running away with it, one hour before his contract expired, indelibly humiliating Vince in the process. The next night on RAW when Cena was supposed to be fired — but he wasn't, due to Vince being fired himself.
Your Princess Is in Another Castle: That is the purpose of the briefcase. In fact, the very first edition of the PPV in 2010 had this happen to Rey Mysterio when Kane cashed in his briefcase the very same night he won it, beating Jack Swagger's record for the shortest amount of time to cash in a briefcase.