How do you get an incredibly thick neck like Macho Man or Hulk Hogan

[TheHulkster85]

Is it genetic or are there exercises you can do that don't risk neck damage.
I know that Hulk hogan had many neck, back, knee, and hip surgeries that reduced his height by at least 4" when combined with a curved spine, old age and fused vertebrae. I want to have a very thick neck, but not if it means having the complications that The Hulkster had.

[Screwtape]

Indirectly, heavy power movements seem to thicken up the neck, if you're doing things like heavy squats, deadlifts, cleans, etc, then your neck will get thicker.
Directly, you can always buy a neck harness for pretty cheap and do some direct work. just check out youtube for neck workouts.