I would think that folks who go in for Sado-Masochistic "activities" would be well-prepared for this <big grin>.

They didn't prepare me for this, but I am a trusting soul (to some extent), and was still recovering from my surgeries, so I just went along with the whole thing. In fact, they had some name for the session that implied I would be in a conference around a table (Development of Radiation Plan, or something like that...).

The only thing was, when two techs had me down on the table for some sort of trial run and the mask fitting, they mentioned that they would be doing the tattoo later and even showed me the kit; I said "Why not now, while we are all assembled here, you have the kit, you have the Nuke Machine aimed and you have me strapped down so I can't escape...?". They looked at each other, opened the kit and had at it!