One common variation of the word is “smark,” which is a portmanteau of smart mark. In this context, “smart” is being used to refer to fans who are smartened up to the fact that what’s presented in the ring is fictional. In the industry’s early days, this made up a small portion of the audience, but wrestling’s predetermined nature is now common knowledge. Therefore, smarks are wrestling fans who know what they’re seeing isn’t real, so they instead become invested in a performer’s in-ring abilities as well as stories of backstage politics and disagreements, both real and fake.

Like other wrestling terms, such as “kayfabe,” the use of the word mark can be traced back to the industry’s origins in the traveling carnival circuit. In the early 20th century, wrestling matches were held at carnivals, and most of the people in attendance very much not smartened up. Taking a cue from con men, who could frequently be found traveling with carnivals, the targets of a scheme were referred to as marks.

During this era, wrestlers and promoters were all very invested in keeping the illusion of reality alive. The public was under the impression that pro wrestling was a genuine contest, like boxing (which had problems of its own with the fixing of matches). Attendees would often gamble on the outcome of a wrestling match, allowing those in the know to capitalize with a bet of their own. Those days are gone, but the “mark” label lives on in a new form.