The title "Mark" referring to both the mark on his arm, and the fact that he is a "mark" -- a victim of a prank or confidence scheme. 18.104.22.168 22:18, 13 December 2012 (UTC)
Hey, I'm part of this club too! Been burning down houses and killing people for years now. ~JFreund
22.214.171.124 08:26, 6 February 2015 (UTC) In other words, never, ever let Cueball play Hotline Miami.
- To the sane person this is absurd. 
The explanation doesn't clearly say that the actual mark is simply: "Pen15" (even though it becomes clear after reading the explanation, for the record: this joke is new to me, I've never been invited to that club :-) 126.96.36.199 (talk) (please sign your comments with ~~~~)
This comic reminds me of the novel The Darkroom of Damocles, in which someone during WWII believes he is recruited into the resistance, and performs several missions, but his recruiter disappears after the war, and he is arrested for collaboration. One interpretation of the novel is that the main character has made everything up or is delusional, similar to how Cueball is delusional about having entered some secret organization. - Redmess (talk) 19:30, 7 November 2019 (UTC)