Jock-Fisting refers to a specific fetish or kink that involves fisting, which is a form of extreme BDSM play where one person inserts their entire hand into another person's anus. The term "jock" here can be interpreted as implying the partner with the fisted anus could be associated with a jock culture or sports culture. It often involves a dominant-submissive role play, where one individual takes on a controlling role and the other a passive receiving role during the act.
Jock-Fisting is specifically related to the context of anal fisting performed in the scenario of one participant being associated with jock culture or sports culture, which usually involves masculine attributes and physical fitness. This type of kink caters to individuals who are interested in this specific context for their sexual play.