In my considerable experience of the three blokes down the pub who have Neck Tattoos, there are only three reasons someone would get one.
1) They are a pathetic Trump-enabling weasel who believes in the supreme power of the Aryan Nation.
2) They are hired muscle on a shady Russian Trawler at the height of the Cold War.
3) They believe that Neck Tattoos are indication to potential employers that under no circumstances should they be employed by them, like some sort of a reverse Masonic Handshake. (Shady Russians Trawler Captains at the height of the Cold War excepted)
I would like to hear from owners of Neck Tattoos if they feel wrongly categorised by the above, or even if they have a fourth option they would like to share with the rest of the thread.