: It can refer to someone who performs menial tasks or, in a derogatory sense, someone perceived as a "loser" or a "nobody." Suggestive Wordplay

Mark's Head Bobbers & Hand Jobbers " is an adult video series that began in 2011, featuring Mark Rockwell (often cited as Mark Roswell) as the protagonist who receives oral and manual sexual services from various adult film performers. Series Overview

The "Head Bobber" and "Hand Jobber" labels are tongue-in-cheek descriptors for:

There is no evidence that this is a legitimate organization, a recognized individual, or a "verified" professional designation. It is almost certainly a crude internet meme or a targeted inside joke

Mark's reputation as "The Verifier" was well-deserved. He could spot a fake from a mile away, much to the dismay of the sellers who tried to pass off reproductions as originals. His method was unorthodox, involving the head bobber and hand jobber in a ritual that only he understood.

The "moves" are easy enough for fans to attempt but difficult enough to master, leading to thousands of "duets" and tribute videos.