Does anyone know how I should go about getting messy in metallic paint? Everything from getting the paint itself to the process of cleaning up. I'm a male by the way.

i may be wrong but i think the most common way would be to source Mehron powder online and mix it with some form of body safe oil.- im not going to tell you the next bit, i dont even know how i'd explain it. cleaning up... carefully, do it carefully.

Glad to help the community.

Mehron powder and vegetable or olive oil (don't use baby oil or corn oil unless you want to smell for hours/days afterwards). Empty the powder into a container (gently, it'll fly everywhere) and add just enough oil to dissolve. Remove in the shower with mild dish soap like Dawn and cheap sponges like the Ocelo brand.ONLY run the water when rinsing, keep it off otherwise - that's the trick. Lather up your hair with just the soap, briefly rinse, repeat as needed. Then load up the sponge with soap, wipe your face, neck, and ears, briefly rinse, repeat. Work your way downwards.
After *you're* clean, look on in despair at the mess in your shower. And expect to find shiny bits you missed in your ear folds and elsewhere for the next few days.